Dichotomous keys are classification tools used to identify taxonomic groups based on distinctive traits. You will find the taxonomic key in the text below.
What is a dichotomous key?
A dichotomous key might be considered a significantly useful tool to classify organisms. The key provides an easy and fast way for identification by describing different morphological traits, leading you to the correct taxonomic classification.
The key provides morphological descriptions about different taxonomic groups in an easy way to identify these traits in your individual.
A dichotomous key will always provide two options (a and b, or 1 and 2), and you will have to choose one of them according to the characteristics of your organism. The morphological descriptions are made in order to discriminate groups.
In the exposed example, we have four animals. Let us analyze their characteristics.
A hawk has feathers, two legs, two wings, claws, hooked peakAn alligator has scames, four legs, no wings, small claws, several sharped teeth.A duck has feathers, two palmate legs, two wings, no claws, plane peakA snake has scames, no legs, no wings, no haws, several sharped teeth.Now. with these descriptions we can make the classification tool.
1) a- It has feathers --------------- go to 2
b- It has scames ---------------- go to 3
2) a- It has claws, a hooked peak, and unpalmate legs -------- Hawk
b- It has a plane peak and palmate legs --------------------------- Duck
3) a- It has four legs ------------- Alligator
b- It does not have legs -------- Snake
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Physical elements needed at school to promote quality in educational context
Answer: The 5 physical elements in school include classroom design, lighting, temperature, air quality, and acoustics. These elements are critical for creating a conducive learning environment that promotes quality education.
The important elements of quality education are the learning enviroment, the teacher and their teaching methods, the educational content, the school management, and the funding and organization.
What is the importance of quality education?Education is at the top of people’s to-do lists around the world. Making sure children go to school and improving education outcomes can transform the growth and prosperity equation.
Education facilitates socioeconomic advancement and is a key factor in eradicating poverty. Education reduces inequalities and promotes gender equality. Education promotes tolerance and promotes a more peaceful society.
The teacher’s job is to create a learning environment in which students feel empowered to learn in a safe and secure environment.
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2. In Albinism, no pigmentation is produced in the skin, hair, and eyes. This is due to a
mutation for the gene that produces the enzyme tyrosinase which produces melanín.
Albinism is a recessive trait. Two heterozygous parents (Aa), both with normal
pigmentation, mate. What are the chances that their offspring will be albino? Show
your Punnett squares & results.
Only 25% of the offspring of the parents would be seen to show albinism.
What is albinism?Albinism is a rare hereditary disorder brought on by gene abnormalities that impact how much melanin your body generates. The pigmentation (color) of your skin, eyes, and hair is regulated by melanin. Albinism is characterized by abnormally pale skin, eyes, and hair.
Based on the information given, there is a 25% chance that their offspring will have albinism (aa genotype).
Therefore, the probability of their offspring having albinism is 25%, which means that for every 4 children born to these parents, one is expected to have albinism.
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2 people with freckles and dimpled cheeks have 2 children. one has freckles and no dimples one has dimples but no freckles? what are the genotypes of the parents?
The genotypes of the parents may be FfDd (heterozygous for freckles and dimples) and Ffdd (heterozygous for freckles and homozygous recessive for dimples), assuming that freckles are dominant over no freckles and dimples are dominant over no dimples.
This cross's Punnett square would be:
F f
D FD fD
d Fd fd
FfDd (parent 1) and Ffdd (parent 2) are the potential gametes for each parent. The four possible allele combinations that the offspring could inherit are FD, fD, Fd, or fd.
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Please help, I keep getting 8/9 of these right. Future global warming is expected to cause:
Answer: More frequent wildfires
Stronger, longer-lasting droughts over all of the U.S
Explanation: Warmer weather causes more dry soil and vegetation, leading to more wildfires.
1. Marco's little brother is watching a TV program about the gene that causes the genetic disease hemophilia. People with this disease cannot make a protein that is needed for blood to clot. After a few minutes, he turns to Marco and asks, "what exactly is a gene, anyway?"
Which of the following BEST describes a gene?
A. A gene is a random change to an organism's DNA.
B. A gene is a structure in a cell that contains the cell's chromosomes.
C. A gene is made of DNA and contains the instructions for building proteins.
D. A gene is a protein that makes up an organism's structure and helps it function.
A gene can be described as being made up of DNA and it contains the instructions which are required for the building of the proteins.
The correct option is option C.
Genes are basically considered as the the functional units of heredity as they are basically composed of DNA, which is the nucleic acid responsible of the transmission of information from one generation to the other generation.
The chromosomes which are present in our body are basically made up of DNA which contain a number of genes. Each of the gene basically comprises of certain set of instructions which are required in order to perform a particular function or codes for some proteins.
Hence, the correct option is option C.
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Label the parts of the muscle tissue as indicated in the image.
The labeled parts of the muscle tissue as indicated in the image are found in the attachment.
What is muscle tissue?Muscle tissue is made up of cells with the unique capacity to shorten in order to cause movement of the bodily components. The tissue is packed with blood vessels and has a high cell density.
Cardiac, smooth, and skeletal muscle tissue are the three types.
Cardiac muscle cells are found in the walls of the heart, have a striated appearance, and are controlled by an automatic mechanism.
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Home-Student Portall
Quiz: Digestive, Reproductive, and Other Systems
savvasrealize.com
DE FERR: Science AM. Schoology
What is the role of a fever in fighting sickness?
OA The rise in body temperature can kill germs.
OB. The rise in body temperature causes you to sweat out germs.
OC. The rise in body temperature is the only way to know you are sick.
OD. The rise in body temperature causes you to release blood cells to fight the germs.
The role of a fever in fighting sickness is option A The rise in body temperature can kill germs.
What is the term about?A fever may be a common resistant reaction of the body when it recognizes the nearness of some substances such as bacteria, viruses, or other pathogens.
Note that the hypothalamus within the brain, which acts as the body's thermostat, detects these outside substances and increments the body's center temperature to assist battle off the disease. This rise in temperature can too offer assistance to hold back the development.
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Explain Phenomenon
You observe many
mushrooms growing in a circle. How many
organisms are you likely seeing? Explain.
The phenomenon of observing many mushrooms growing in a circle is known as a fairy ring or elf circle.
The number of mushrooms growing in the elf circle depends on the species of the mushroom.
What is an elf circle?Fairy rings, often referred to as elf rings or pixie rings, are circles composed of mushrooms that appear in nature.
Some mushrooms are small, while others can reach a diameter of 600 meters as they emerge from the earth in a circular pattern. One of the most wonderful places in the woods are fairy rings.
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PLEASE HELPPP!!!!!!
1) Use the following situation and tables to choose the correct answer.
Randomly sampled students from two high schools were asked what color the district should paint the new stadium. The results are presented in the following tables:
Stadium Color - North Valley High
Color: Survey Results:
silver 30
blue 54
teal 36
Stadium Color - South Hills High
Color: Survey Results:
silver 78
blue 24
teal 18
Make an inference comparing which color each of the two high school populations should choose for the stadium, based upon a qualitative comparison of the sampled data.
A.) North Valley High should choose silver to give the minority of the students who selected silver a win in the selection process. South Hills High should choose teal because a minority of their sampled students selected the color teal than other colors.
B.) North Valley High should choose blue because more of the sampled students selected the color blue compared to the other colors in the survey. South Hills High should choose silver because more of the sampled students selected the color silver than other colors.
C.) North Valley High should choose teal because that color was selected between the other two colors and would appeal to a broader base of students. South Hills High should choose blue in order to appeal to a broader base if its students.
North Valley High should select blue because more of the sampled students picked the color blue compared to the other colors in the survey. South Hills High should select silver because more of the sampled students picked the color silver than other colors.
This is the correct inference based on the given data. The survey results show that blue was the most popular color among the North Valley High students, and silver was the most popular color among the South Hills High students. Therefore, it would make sense for each high school to choose the color that was most popular among their respective student populations.
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Select a literary work to use as the subject of your literary analysis.
We can see here that in order to write your literary analysis, here is a guide that will help you:
Make research on the literary works you want to make use of.The literary works should be read before the analysis startsYour literary analysis should show all important information from the selected analysis.What is literary analysis?We can define literary analysis is the technique of thoroughly examining a work of literature in order to comprehend its meaning and significance.
It entails attentively evaluating a literary work's language, structure, and topics, as well as considering the historical and cultural environment in which it was created.
The purpose of literary analysis is to get a better knowledge of the literary work, to identify the author's literary techniques, and to examine how those approaches contribute to the overall meaning and impact of the work.
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Is this a scientific model? Use complete sentences to explain why or why not.
A system of ideas, events, or processes is represented physically, mathematically, conceptually, or conceptually in a scientific model.
Thus, By using their scientific expertise to provide explanations that make it possible to forecast the patterns, scientists work to recognize and comprehend the patterns that exist in our environment.
The models that scientists develop must be in line with our observations, conclusions, and existing explanations. Scientific models, however, are not intended to represent the world as it actually is. Scientific models can be categorized as follows to help:
Mental models (a representation of a difficult concept, such as how humans conceptualize an abstract concept like atoms).
Thus, A system of ideas, events, or processes is represented physically, mathematically, conceptually, or conceptually in a scientific model.
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Match the descriptions below to the correct type of muscle.
spindle-shaped
attached to bones
voluntary
cells joined together by intercalated discs
not striated
found in heart
cells with many nuclei
The three types of muscles are skeletal, cardiac, and smooth muscles. Skeletal muscles are attached to bones, they are also voluntary, meaning they can be consciously controlled by the individual. They have cells that have many nuclei, making them multinucleated.
Cardiac muscles are found in the heart and their cells are joined together by intercalated discs. They are involuntary, meaning they cannot be consciously controlled. Smooth muscles are not striated, they are spindle-shaped, and also involuntary. They are found in various organs and tissues, such as the digestive system and blood vessels.
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Cats can see objects better that are farther away.
Group of answer choices
True
False
Answer:
False
Explanation:
They have a small range of vision :)
Before Darwin's theories, scientists thought that species….
O never changed
O Changed over time
O Changed only randomly
Answer:
Never changed.
Explanation:
Before Darwin's theories, scientists thought that species never changed. This concept was commonly known as the doctrine of "fixity of species," which posited that species were immutable and remained unchanged since their creation. According to this belief, species were considered to be fixed entities with no potential for an evolutionary change or adaptation to their environment. This view was deeply entrenched in the prevailing scientific and religious beliefs of the time, and it was not until Darwin's groundbreaking work on natural selection and the theory of evolution that this long-held notion was challenged and replaced with the understanding that species do indeed change over time through the process of natural selection and other mechanisms of evolution.
What would happen to this ecosystem if another apex predator, such as a killer whale, was introduced?
The introduction of an apex predator, such as a killer whale to an ecosystem can have significant impacts on the existing food web and ecosystem dynamics.
Thus, the presence of a new apex predator, such as a killer whale increases the competition between the existing apex predator and the newly introduced predator for food resources, such as seals and sea lions.
The introduction of a new apex predator can also affect the behavior of the existing species. For example, the seals can change their behavior to protect themselves from predation by the killer whale by changing their movement patterns.
The introduction of a new apex predator like a killer whale to this ecosystem require careful monitoring and management to minimize the negative impacts on the ecosystem.
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Scenario: What 2 systems are working together? Horned lizards have a defense mechanism that includes shooting blood from their eyes. The major veins surrounding the eye of the lizard are controlled by muscles. When the lizard contracts these muscles, blood flow is increased to the head. As a result, a specialized membrane similar to an eyelid fills with blood. Muscles in the eyelid and eye contract to shoot blood when predators approach. Scientists believe the blood deters predators.
The two systems that are working together in this scenario are the circulatory system and the muscular system. The circulatory system, which includes the heart, blood vessels, and blood, is responsible for transporting oxygen and nutrients throughout the body. In the case of the horned lizard, the circulatory system is involved in supplying blood to the area around its eyes.
The muscular system is responsible for the movement of the body and the maintenance of posture. In the case of the horned lizard, the muscular system controls the major veins surrounding the eye and is responsible for contracting the muscles to increase blood flow to the head. The muscles in the eyelid and eye also contract to shoot blood when predators approach.
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you and your friend in the school yard. you rest your ear against a metal leg of the swings while your friend gently taps on the leg. you hear the tapping. describe the wave produced bt tapping. is it a longitudinal wave or a transverse wave? Draw a model of the wave.
The wave produced by tapping on the metal leg of the swings is a longitudinal wave. Longitudinal waves have oscillations that occur parallel to the direction of wave propagation.
When your friend taps on the metal leg, it causes compression in the material. This compression then travels through the metal as a wave, with successive compressions and rarefactions. As the wave reaches your ear, it causes your eardrum to vibrate, and you perceive the tapping sound.
| | | | |
C R C R C
| | | | |
The "C" represents compression, and the "R" represents a rarefaction. The wave propagates from left to right, with each compression and rarefaction alternating in sequence. As you rest your ear against the metal leg of the swings, you are able to detect the longitudinal wave as it travels through the metal and into your ear.
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In a certain area where there are many farms, the groundwater levels have dropped by as much as 10 m over a period of 30 years. The main cause behind this is MOST LIKELY
The excessive pumping of water through wells is the most likely cause behind the drop in groundwater levels in the given area with many farms. Option b is correct.
The overuse of groundwater resources, especially for agricultural purposes, is a common problem that leads to a decline in groundwater levels. As farmers pump more and more water from wells to irrigate their crops, the natural recharge rate of the aquifer is unable to keep up with the extraction rate.
This can result in a long-term decline in the water table, which can be exacerbated by drought or other climatic factors. Option b is correct.
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Complete question will be
In a certain area where there are many farms, the groundwater levels have dropped by as much as 10 m over a period of 30 years. The main cause behind this is MOST LIKELY
Question 5 options:
the leakage of fertilizers from the farms into the aquifer.
the excessive pumping of water through wells.
the evaporation of water from aquifers.
the construction of a dam to divert water into a reservoir.
Many different microscopic organisms can be found in pond ecosystems, including the three organisms shown in the diagrams below. The primary cellular structures in each of these single celled organisms are labeled in the diagram. Some of the structures are common to all three organisms and other structures are not. One of the three organisms below can obtain energy through photosynthesis.
a. Based on the diagrams, identify which organism is able to perform photosynthesis. Explain your reasoning.
b. Identify the two reactants for photosynthesis.
c. At times, this photosynthetic organism can switch to being heterotrophic. Describe a condition that would favor this organism being heterotrophic. Explain your answer.
Plants absorb water (H2O) and carbon dioxide (CO2) from the soil and atmosphere during photosynthesis.
Thus, Water is oxidized, which means it loses electrons, while carbon dioxide is reduced, which means it receives electrons, inside the plant cell.
Water is converted into oxygen and carbon dioxide into glucose as a result. After storing energy within the glucose molecules, the plant releases the oxygen back into the atmosphere.
Chlorophyll absorbs energy from blue and red light waves during photosynthesis while reflecting green light waves, giving the appearance of a green plant.
Thus, Plants absorb water (H2O) and carbon dioxide (CO2) from the soil and atmosphere during photosynthesis.
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PLEASE HELP IVE BEEN STUCK ON THESE TWO QUESTIONS FOR A LONG TIME
Answer: honestly it really depends on the water and how its dripped
Explanation:
10. Apply Scientific Reasoning Explain how a
vaccine can prevent you from getting ill from
a virus without making you ill.
Antibodies that have previously been produced destroy and remove pathogens, so protecting the individual from illness and/or death.
What is a Vaccine?A vaccination is a biological preparation that induces active acquired immunity against a specific infectious or malignant disease. Vaccine safety and effectiveness have been extensively researched and validated.
Vaccines are often administered through needle injections, however, some can also be administered orally or through the nose.
Vaccines provide protection against a variety of infectious diseases.
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The outsiders Project
1. How would the character’s
change to reflect teens today?
2. What would their hair and
clothing look like today?
3. What activities would they val‐
ue today that weren’t available in
the 1960s?
4. What details about the culture
(such as movies, movie stars,
cars, clothing, etc.) do teens
today think are important as op‐
posed to those in the novel?
5. What activities would the char‐
acters participate in today?
6. How would the characters
speak and act?
7. Who would be the greasers’
enemies and what would both
groups be called today rather
than “greasers” and “Socs”?
Based on the story titled "The Outsiders,"
1. To reflect todays teenagers, the character will likely have skills in technology, and will come from different cultural background. A bulk of their interaction will revolve around social media, and their groups will be larger in size.
2. The greasers will be influenced by older fashion. Like gothic themed fashion or cowboy influenced fashion. while the socs will have a more contemporary look like wavy hair that is mildly tinted, with skinny jeans, or wealthy vintage looks.
3. They would love online video games, and content creation for various online platforms
4. Teens today value the web and will therefore make out time for each other online than meeting everyday. They enjoy the media and will therefore love movies, anime and anything around online content.
5. They would participate in online betting games, video game competition, football worshipping and concerts where there are entrainments and drinks.
6. The socs will speak with eloquence and participate in rich people's things because they are ever conscious of their class. The greaser will have a lot of fun camping, touring places, learning hard skills. They would have colloquial terms that may be considered rude to others.
7. The greasers will be called the underdogs or revolutionists while the Socs will be seen as the elite or classist. The biggest enemy of the underdog will be both the elite and government.
What happens in the outsider?"The Outsider" is a novel by Stephen King. It tells about a teenager who was killed in a conflict by a greaser. The boys involved in the killing had to leave their family and flee so that they would not be arrested. The book gives us insight about their way of life.
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I need help please
FORREST GUMP Discussion Response
What is the most important scene, shot or moment? How is this relevant to the film?
How did Forrest's participation is significant historical events affect his personal outlook on life (and extend to other characters around him)?
How did the CGI effects contribute to creating a believable environment?
Justify your response, citing SPECIFIC examples or scenes from the film.
✓
What disorder can change morphology?
Answer:
brain disorder
Explanation:
The two nucleotides called adenine (A) and Guanine (G) are referred to as purines and Cytosine (C) and Thymine (T) as pyramidines. Looking at the structure of the nucleotide molecules why are A and G grouped together and C and T grouped together. What makes A and G more similar in structure to each other and different from C and T? [Hint- focus on the number of rings in the nitrogenous base]
Purines, A and G are similar in structure as they both have two-ringed structures with four nitrogen atoms while the Pyrimidines, T, and C have single-ringed structures with only two nitrogen atoms.
Purines and Pyrimidines are nitrogenous bases that are building blocks of nucleic acids DNA and RNA. A purine is an organic compound whose pyrimidine ring is fused with an imidazole. A Pyrimidine is an organic compound that is similar to benzene and pyridine.
Purine forms two nucleobases in the DNA and RNA namely Adenine and Guanine. Pyrimidines consist of three nucleobases in DNA and RNA namely Uracil, Cytosine, and Thymine.
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A distinguishing feature of methanogens is that they
A distinguishing feature of methanogens is that they are microorganisms that produce methane as a byproduct of their metabolism.
Methanogens are archaea which is a group of single-celled microorganisms and are anaerobic, i.e. they can survive in environments with no oxygen. They obtain their energy by converting organic compounds into methane. These organisms are distinct from both other organisms, such as bacteria and eukaryotes.
Methanogens are found in a wide range of environments, including wetlands, the digestive tracts of ruminants, and deep sea sediments. They are also important microorganisms as they are used in producing methane which is further used as a source of renewable energy.
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Which sentence describes the impact of the great oxidation event?
The correct statement is "It caused many organisms to die off" because oxygen was toxic to them.
Option (b) is correct.
The Great Oxidation Event refers to the period of time approximately 2.4 billion years ago when oxygen began to accumulate in the Earth's atmosphere due to the evolution of photosynthetic organisms like cyanobacteria.
This event had a significant impact on the evolution of life on Earth, as the presence of oxygen allowed for the evolution of aerobic respiration, which is much more efficient than anaerobic respiration. However, the sudden increase in oxygen also caused many anaerobic organisms to die off because they were unable to tolerate the presence of oxygen,
Therefore, the correct answer is option B
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32 Which is not a characteristic of good scientific
investigations?
F
They are open to questions.
G
They are replicable.
I
H They are used to develop a theory.
They follow accepted methods
of investigation.
Which of the following organisms would NOT be in the first tropic level of an energy pyramid? Responses dog tree gas
Answer:
dogs
Explanation:
On a shade-grown coffee plantation, smaller coffee trees grow in the shade of other forest trees. Why is shade-grown coffee more sustainable than coffee grown in full sun?
A. It provides greater profits for farmers.
OB. It provides habitat for forest birds.
O C. It reduces forest biodiversity.
D. It produces more coffee beans.
The reason why it is more sustainable is that It provides habitat for forest birds.
What is shade grown coffee?Owing to the fact that it provides home for forest birds and encourages biodiversity, coffee farmed in the shade is said to be more environmentally friendly than coffee grown in full sunlight.
Shade-grown coffee farms keep their tree canopy intact, preserving the habitat for species such as birds, insects, and other creatures vital to the ecosystem's health.
By minimizing deforestation and soil degradation, this method of growing coffee has been found to conserve the environment and preserve biodiversity.
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