Answer:
Explanation:
Molecules are made of atoms, the smallest unit of chemical elements. They can be found in all matter, living and non-living
An organ system is a group of organs that work together to perform specific bodily functions. The respiratory system, for example, uses the lungs, airways and respiratory muscles to inhale oxygen and release carbon dioxide in animals.
what is four types of evidence that is used to determine evolutionary relatedness
Answer:
Evidence for evolution: anatomy, molecular biology, biogeography, fossils, & direct observation.
Explanation:
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Answer: B When cold air moves into a warm air mass.
Explanation: As a cold front moves into an area, the heavier (more dense) cool air pushes under the lighter (less dense) warm air, causing it to rise up into the troposphere.
Why is sugar considered a compound?
Answer:
It is a compound because it has 2 or more element joined together. In this case it is hydrogen/oxygen and carbon.
Explanation:
Why can’t we send cactuses out too mars? It’s has a form of water at night time and the plant doesn’t need that much water and since it’s a plant it can turn the 95% carbon dioxide in to oxygen? Right?
Answer:
It is very possible for a plant to grow on mars, but you would need better soil, because mars' soil is filled with perchlorate salt which is toxic to plants. You would also need to conceal the plant, because the temperatures on mars are usually freezing. But yes, you could have a cactus on mars, it would just be very difficult to sustain.
Explanation:
Answer:
In response to what another user said, I would suggest bringing fertilized soil to Mars, placing it on the surface of the soil, and planting the cactus.
Being active at night and sleeping in burrows during the day is an adaptation of many animals living in the _____________
What is required for natural selection to take place? (HINT: There are 3 requirements)
Answer:
Explanation:
Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population.
ORR
Struggle for existence, variation and inheritance. These are said to be the necessary and sufficient conditions for natural selection to occur.
How do symbiotic and predatory relationships differ
Answer:
A symbiotic is a relationship where both sides benefit. Only the predator benefits in a predatory relationship.
Explanation:
Look at the sketches. The sketch on the top is of a
fish embryo, and the sketch on the bottom is of a
chicken embryo.
Which of the following statements is the best
explanation for why the embryos look so similar,
considering how different an adult fish and chicken
are?
Answer:
“Fish and chickens share a common ancestor “
Explanation:
Answer:
fish and chicken share a common ancestor
Explanation:
What is the phenotype of the sons in generation lII?
Answer:
The males are represented as a Sqaure. The sqaure in the third box is also collected meanning its dominant. So what ever it says next to the pedigree diagram (what penotype it is) it's most likely domintant. I can't help much because you haven't took a proper photo.
Explanation:
send a clearer photo, I cant see the genetoypes listed next to the pedigree diaram
In 1988, James Hansen projected future warming trends. He used 3 different scenarios, identified as A, B, and C. Each represented
different levels of greenhouse gas emissions. All three indicated a strong cause and effect relationship between observed
temperatures and human emissions of greenhouse gases into the atmosphere. Greenhouse gas emissions are at the center of
almost all climate change concerns. What are the likely effects of increasing Greenhouse gas emissions on the ecosystem? Select
ALL that apply.
A)
rising sea-levels and ocean acidification
B)
changes in precipitation resulting in flooding and droughts
more extreme, erratic, unpredictable weather, including intense hurricanes
D)
decreases in respiratory illnesses due to the warming temperatures and
shorter winters
E)
increases in agriculture production due to increased CO2 availability for
photosynthesis
Answer: a b c
Explanation: lol I just got it wrong so ik the answers
A) rising sea-levels and ocean acidification
B) changes in precipitation resulting in flooding and droughts
C) more extreme, erratic, unpredictable weather, including intense hurricanes
What is green house effect?The greenhouse effect is a natural process that occurs when certain gases in the Earth's atmosphere, such as carbon dioxide, methane, and water vapor, trap heat from the sun. These gases act like a blanket, keeping the Earth's surface warm enough to sustain life. Without the greenhouse effect, the Earth would be too cold to support most forms of life.
However, human activities such as burning fossil fuels have increased the levels of greenhouse gases in the atmosphere, leading to an enhanced greenhouse effect and global warming. This is a significant environmental issue as it can cause harmful impacts on ecosystems and human societies.
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What are the proper attire as part of personal hygiene.
1.
2.
3.
4.
5.
plsss ASAP
Answer:
This may be coats, aprons, gloves, hairnets, beard nets and footwear. Clothing, footwear and headwear must be in good, clean condition. Hairnets must be worn by everyone. Any facial hair (beards and moustaches) must be covered by a beard net.
Explanation:
i hope you understand better
 For each phenotype, write the possible genotypes.
In dogs, deafness is recessive.
Deafness: ____________________
Normal hearing: ______,____
These cells, in the blood, carry oxygen and give the blood its color.
Please fast as you can
Answer:
Red blood cells.
Explanation:
Hope this helps!
Answer: https://kidshealth.org/en/kids/blood.html
Red blood cells: Red blood cells (RBCs, also called erythrocytes; say: ih-RITH-ruh-sytes) are shaped like slightly indented, flattened disks. RBCs contain hemoglobin (say: HEE-muh-glow-bin), a protein that carries oxygen. Blood gets its bright red color when hemoglobin picks up oxygen in the lungs.
Explanation:
Between males and females, who is more likely to receive a sex-linked disease and why?
a - Males because they have a Y chromosome
b - Females because they have Xs
c - Males because they only have one X
d - Females because they do not have a Y
state mendels laws and exlain the law of purity of gametes
Answer:
Blending. Hint:Mendel's law of purity of gametes states that the unit factors are brought together and paired during fertilization, however, these unit factors do not affect or mix with each other though they have become paired.
Explanation:
Which area on the earth experience the largest difference between summer and winter?
Answer:
North Pole
Explanation:
The surface of the Earth is inclined perpendicular to the sunlight (as in the left hand side of figure 2), and so receives the maximum amount of sunlight per square area. The situation is most extreme at the north and south poles. At the north pole, the season is one long,cold night which last for six months.
Witch of the following would most likely produce a earth quake
Answer:
the earthquake is held mostly is soft rock which is sleeping with each other
Ou just read an article on the Endosymbiotic Theory. Based on what you read, what is the importance of the Endosymbiotic Theory?
Answer: The endosymbiotic theory suggests that eukaryotic organisms evolve from primitive prokaryotic organisms.
Explanation:
According to the endosymbiotic theory the organelles like mitochondria and chloroplast in the eukaryotic cells have arisen from aerobic bacteria. The aerobic bacteria being prokaryotic cell was consumed by the anaerobic bacteria or prokaryotic cell.
The following are the evidences of the origin of eukaryotic organisms from prokaryotic organisms:
1. The chloroplast and mitochondria have circular DNA like bacteria.
2. The mitochondria and chloroplast reproduce through binary fission which also occurs in bacteria.
Answer:
The Endosymbiotic Theory states that the mitochondrion and chloroplasts were consumed by a cell and now depend on one another to survive. Endosymbiotic Theory helps us by giving us the technology to use forensic sciences to solve cold cases.
Explanation:
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What two elements are used to produce energy during nuclear fission?
A. Petroleum and Uranium
B. Petroleum and Hydrogen
C. Plutonium and Uranium
D. Hydrogen and Uranium
Answer:
C Plutonium and Uranium
Explanation:
u Uranium and plutonium are commonly used elements that produce energy during nuclear fission.
Petroleum is used to produce energy for transportation, heating and electricity, not nuclear fission
Gametes (sex cells) in the flower require nutrients from the soil to ensure proper functioning. Which list of systems below best describes the interaction in that statement?
Answer:
There is a great interaction between reproductive stage and absorption of nutrients.
Explanation:
Good interaction of reproductive stage and absorption of nutrients from the soil is very important for producing good and healthy flowers because reproductive stage needs nutrients. If these nutrients can't available in the soil so the plant produced less flowers and as a result less seeds are produced in the end of this reproductive stage so we can say that reproductive stage and absorption of nutrients has a great interaction between each other.
HELP QUICK-Which of the following is true regarding the atoms involved in a chemical reaction?
The same number of each type of atom will always be present before and after a chemical reaction takes place.
Some of the atoms present before the reaction will always be lost during a chemical reaction.
Some of the atoms will always be changed into a different type of atom by a chemical reaction.
During a chemical reaction, atoms will always be combined into much larger molecules.
Answer:
The same number of each type of atom will always be present before and after a chemical reaction takes place.
Explanation:
A male with hemophilia (recessive, sex-linked) and a female who is normal (no hemophilia) have a girl? What is the likelihood that a girl will have the disorder?
a - 0%
b - 50%
c - 100%
d - Impossible to tell
Answer:
Option A is the correct answer.
- 0%
Explanation:
This is because the male is hemophilia recessive, not dorminant and the female allele has no traits of hemophilia therefore, the offspring have zero percent of having the diseases. The girl allele will be normal and recessive of hemophilia. Because there is no dorminant allele that can result into hemophilia.
The topic is genetics
Answer:
Heterozygous
Explanation:
Heterozygous mean 'different' and homzyg mean 'same'. They have Bb, they are 2 different alleles so its heterozygous.
Using the above table which of the following organisms are more closely related
Answer:
please post the table so that you can get help
Explain Kelpers three laws of motion
Answer: There are actually three, Kepler's laws that is, of planetary motion: 1) every planet's orbit is an ellipse with the Sun at a focus; 2) a line joining the Sun and a planet sweeps out equal areas in equal times; and 3) the square of a planet's orbital period is proportional to the cube of the semi-major axis of its
Explanation:
Why does planting cover crops help conserve soil?
A. plants take up nutrients from soil.
B. Cover crops help remove pollution from the soil.
C. Uncovered soil is easily eroded by wind and water.
D. Cover crops sell for more money that farmers can then use to invest in new soil.
Answer:
A. plants take up nutrients from soil.
Explanation:
A cover crop slows the velocity of runoff from rainfall and snowmelt, reducing soil loss due to sheet and rill erosion. Over time, a cover crop regimen will increase soil organic matter, leading to improvements in soil structure, stability, and increased moisture and nutrient holding capacity for plant growth.
I need help with my earthworm behavior essay! Has anybody done it and is there answers?
An earthworm is a terrestrial invertebrate that belongs to the phylum Annelida. They exhibit a tube-within-a-tube body plan, are externally segmented with corresponding internal segmentation, and usually have setae on all segments. They occur worldwide where soil, water, and temperature allow. Earthworms are commonly found in soil, eating a wide variety of organic matter. This organic matter includes plant matter, living protozoa, rotifers, nematodes, bacteria, fungi, and other microorganisms. An earthworm's digestive system runs the length of its body. It respires through its skin. It has a double transport system made of coelomic fluid that moves within the fluid-filled coelom and a simple, closed circulatory system. It has a central and peripheral nervous system. Its central nervous system consists of two ganglia above the mouth, one on either side, connected to a nerve running along its length to motor neurons and sensory cells in each segment. Large numbers of chemoreceptors concentrate near its mouth. Circumferential and longitudinal muscles edging each segment let the worm move. Similar sets of muscles line the gut, and their actions move digesting food toward the worm's anus.
Earthworms are hermaphrodites: each carries male and female sex organs. As invertebrates, they lack a true skeleton, but maintain their structure with fluid-filled coelom chambers that function as a hydrostatic skeleton.
On the surface, crawling speed varies both within and among individuals. Earthworms crawl faster primarily by taking longer "strides" and a greater frequency of strides. Larger Lumbricus terrestris worms crawl at a greater absolute speed than smaller worms. They achieve this by taking slightly longer strides but with slightly lower stride frequencies.
Touching an earthworm, which causes a "pressure" response as well as a response to the dehydrating quality of the salt on human skin, stimulates the subepidermal nerve plexus which connects to the intermuscular plexus and causes the longitudinal muscles to contract. This causes the writhing movements observed when a human picks up an earthworm. This behaviour is a reflex and does not require the CNS; it occurs even if the nerve cord is removed. Each segment of the earthworm has its own nerve plexus. The plexus of one segment is not connected directly to that of adjacent segments. The nerve cord is required to connect the nervous systems of the segments.
The giant axons carry the fastest signals along the nerve cord. These are emergency signals that initiate reflex escape behaviours. The larger dorsal giant axon conducts signals the fastest, from the rear to the front of the animal. If the rear of the worm is touched, a signal is rapidly sent forwards causing the longitudinal muscles in each segment to contract. This causes the worm to shorten very quickly as an attempt to escape from a predator or other potential threat. The two medial giant axons connect with each other and send signals from the front to the rear.
Hope this helps!
You are concerned that your significant other cheated on you and they are not the mother/father of the baby! Luckily for you, you know all about blood typing and how it works. Your baby is type B blood. You are type A blood. You think your significant other is type A blood. Is your significant other faithful? Explain using a Punnett square how you know.
Here is some info from the red cross...Universal donors are those with an O negative blood type. Why? O negative blood can be used in transfusions for any blood type.
Type O is routinely in short supply and in high demand by hospitals – both because it is the most common blood type and because type O negative blood is the universal blood type needed for emergency transfusions and for immune deficient infants.
Approximately 45 percent of Caucasians are type O (positive or negative), but 51 percent of African-Americans and 57 percent of Hispanics are type O. Minority and diverse populations, therefore, play a critical role in meeting the constant need for blood.
Types O negative and O positive are in high demand. Only 7% of the population are O negative. However, the need for O negative blood is the highest because it is used most often during emergencies. The need for O+ is high because it is the most frequently occurring blood type (37% of the population).
The universal red cell donor has Type O negative blood. The universal plasma donor has Type AB blood. For more about plasma donation, visit the plasma donation facts. There are very specific ways in which blood types must be matched for a safe transfusion. The right blood transfusion can mean the difference between life and death.
Every 2 seconds someone in the US needs a blood transfusion.
Use the interactive graphic below to learn more about matching blood types for transfusions.
Also, Rh-negative blood is given to Rh-negative patients, and Rh-positive or Rh-negative blood may be given to Rh-positive patients. The rules for plasma are the reverse.
Answer:
Type O is routinely in short supply and in high demand by hospitals – both because it is the most common blood type and because type O negative blood is the universal blood type needed for emergency transfusions and for immune deficient infants.
Approximately 45 percent of Caucasians are type O (positive or negative), but 51 percent of African-Americans and 57 percent of Hispanics are type O. Minority and diverse populations, therefore, play a critical role in meeting the constant need for blood.
Explanation:
Black fur is dominant over brown fur in a particular population of guinea pig. The genetic information that gives a guinea pig brown fur is described as having –
A. Genes from both parents that are dominant
B. One dominant and one recessive gene from each parent
C. Genes from both parents that are recessive
D. One recessive gene from one parent and one dominant gene from the other parent
Genes from both parents that are recessive best describes a guinea pig
having brown fur in a black fur dominated population.
Genes from the parents are usually transferred to the offspring. Presence
of dominant gene in both parents means the offspring will have a black fur.
One recessive gene from one parent and one dominant gene from the
other parent means that the dominant gene which is black will have to be
exhibited by the offspring.
Presence of recessive gene from both parents means that there is no
dominant trait which means the pig will have a brown fur.
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Compare and contrast transcription and translation.
Answer:
Transcription is the synthesis of RNA from a DNA template where the code in the DNA is converted into a complementary RNA code. Translation is the synthesis of a protein from an mRNA template where the code in the mRNA is converted into an amino acid sequence in a protein.