Answer: Because whale swims and femur is not required in this.
Explanation:
Sometimes, parts of the body that were useful to our ancestors no longer are in our bodies. These structures, like the pelvis and femur in whales, are proof that natural selection over time allowed us to evolve from ancestors who possessed different characteristics.
Whales' femur and pelvis are regarded as vestigial structures. These buildings were passed down from relatives who used them, but they are no longer in use. Animals that once walked on land have given rise to whales.
For this reason, their forebears need a pelvis and femur bones. Whales have these structures today, but they did not develop the ability to swim, despite the fact that they do.
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What caused the
evolution of
peppered moths?
A. their food source died off
B. a forest fire destroyed their habitat
C. their number of predators increased
D. the change in the color of their environment
what drives sexual selection
Yellow pods are dominant to green pods in peas.What is the probability that the second generation of plants will have yellow
pods, if the parental generation is homozygous dominant and homozygous recessive for the pod trait? (hint - need to use two
Punnett squares.)
a. 0%
O b. 25%
O c. 50%
O d. 75%
Answer:
I believe the answer is 25% is one of the parent pods is dominant and the other parent pod is recessive, feel free to correct me if i'm wrong.
Hope this helps!
Explanation:
Please is correct ?
Answer:
The answer is air
Can you please help me fast
Answer:
A.
Explanation:
Scientists classify different minerals by their elements.
How can hurricanes hold water
Answer:
Hurricanes are made of water vapor.
Explanation:
5. N2, Cl2, and O2 are all
A. diatomic molecules
B. solids
C. liquids
D. in the same family
Explanation:
they are all diatomic molecules
ans: A
they are all gases
please mark brainliest
27. A student constructs a model to show the structural organization in humans, as shown.
Which statement explains how each level of the organization is created?
A. Two or more types of muscle tissues working together make an organ.
B. Two or more types of organs working together make a cell.
C. Two or more types of organ systems working together make a tissue.
D. Two or more types of muscle tissues working together make a cell.
Maya lives near the sea and likes to have picnics with her friends on the beach. The beach is home to many gulls that carry the bacteria for the disease psittacosis. During one of these picnics, a gust of wind scatters sand and water, which is contaminated with gull droppings, into the air. Five days later, Maya and her friends all develop symptoms of psittacosis. Which mode of disease transmission could have infected Maya and her friends with the psittacosis bacteria?
A.
aerosol
B.
direct contact
C.
vector
D.
oral
Reset
Answer:
A. Aerosol
Explanation:
Aerosol transmission is when the pathogen is spread through the air, either by the transmission from the air to the person directly or by the pathogen being stored in the environment the infected organism was in.
Lets check the other answers just in case.
B. Maya and her friends did not directly contact the infected seagulls, so this is incorrect.
C. Vector transmission is by utilizing insects in order to transport the pathogen. While this was the cause of the bubonic plague, this is not the case for this transmission.
D. Oral is also not the answer, as they were not exposed by close contact with the infected seagulls. Unless they tried CPR on a seagull or ate an infected seagull, this is unlikely.
Hope this helps!
es la A..............................
.....
ESO CREO
.............
What traits will this
individual
R=round and Y=yellow?
have if
RrYy
A. round and green
C. wrinkled and
yellow
B. round and yellow this
D. wrinkled and green
The traits this individual will show are Round and yellow.
What is gene?Gene is the unit of information inside a cell by which controls what a living thing will be like. Genes are to the passed from parents to children.
Here
R is dominant allele to r for shape, hence in Rr round will be the outcome.
Y is dominant allele to y for color, hence in Yy yellow will be the outcome.
Here law of independent dominance, works
According to Mendel's law of dominance, in heterozygotes one trait masks the presence of another for the same trait. The dominant allele is exclusively expressed instead of both alleles contributing to the phenotype.
So answer is ROUND and YELLOW (Option B).
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The genetic material is located in which part of the cell
Answer:
The Cell Nucleus
Explanation:
Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or (mtDNA). Mitochondria are structures within cells that convert the energy from food into a form that cells can use.
The cell's genetic material is contained in the nucleus.
Cells, frequently referred to as the "building blocks of life," make up all living organisms, ranging in number from the single cell of bacteria to the trillions in humans.
Each of these cells is a distinct entity enclosed in a cell membrane and containing a viscous liquid substance known as cytoplasm.
The majority of the DNA in human cells is located in a region of the cell called the nucleus. It's referred to as nuclear DNA.
DNA's primary role in a cell is to store the genetic data necessary for an organism to grow, function, and reproduce. Each creature is unique because of the information that is stored in its DNA and can be handed down from one generation to the next.
Therefore, the nucleus of the cell contains genetic material.
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Which is a method used to
genetically modify
organisms?
A. having bacteria engulf a cell with
the new DNA
B. having the organism swallow a pill
with new DNA
C. using a plasmid to insert new gene
into the cell of the organism this is answer
anyone know of any free anatomy classes i can take or free onlive live classes for all categories
Answer:
Answer below
Explanation:
Many states offer free virtual programs that allow you to co-enroll and access advanced courses for free. Check with your local virtual programs to see which ones you can qualify for.
If you are unable to attend virtual programs, then you can likely find a online service (it will not be live most the time) that can teach you. Channels like CrashCourse are good, but I believe Khan Academy also provides videos, articles, and practice tests on anatomy.
I hope this helps, anatomy and physiology is a very useful and interesting course to take. Good on you for having the initiative =)
26. A student observes two cells under a microscope and lists observations in the table shown.
Which statement most likely describes the two cells?
A. Both Cells A and B are plant cells.
B. Both Cells A and B are animal cells.
C. Cell A is a plant cell; Cell B is an animal cell.
D. Cell A is an animal cell; Cell B is a plant cell.
Answer:
Explanation:
c because animal cells requires no wall to make tissue
plants need chloroplast to survive
Answer:
C.) Cell A is a plant cell; Cell B is an animal cell.
Explanation:
The two cells each have a nucleus and mitochondria, indicating they are eukaryotic cells.
The presence of chloroplast and a cell wall indicate that Cell A is a plant cell, as animal cells do not contain those structures.
Cell B is likely an animal cell because it has a nucleus, mitochondria, and no cell wall.
how to describe a neuron and all of it's part and how they work together
Most neurons have a cell body, an axon, and dendrites. The cell body contains the nucleus and cytoplasm. The axon extends from the cell body. Dendrites extend from the neuron cell body.
What are neurons?Neurons are information messengers. They use electrical impulses and chemical signals to transmit information between different areas of the brain, and between the brain and the rest of the nervous system.
The two types of prominent brain cells are the glial cells and the neurons. While neurons in the brain play the lead role, glial cells outnumber neurons in different areas throughout the brain.
Neurons (also called neurons or nerve cells) are the fundamental units of the brain and nervous system, the cells responsible for receiving sensory input from the external world.
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14. Examine the portion of the periodic table that contains neon, an unreactive gas in Group 18.
Which element would have similar properties to neon, and why?
A. Ar; elements in the same family of the periodic table share the same characteristics.
B. Fl; elements in the same period of the periodic table share the same characteristics.
C. Fr; elements on opposite corners of the periodic table share the same characteristics.
D. Li; elements on opposite sides of the periodic table share the same characteristics.
Answer:
Explanation: I believe it is, C. Fr; elements on opposite corners of the periodic table share the same characteristics.
Because it makes for sense
The element that is similar to neon is Ar; elements in the same family of the periodic table share the same characteristics. Option A
What is the periodic table?The periodic table has to do with the arrangement of the elements in such a way that there can be a systematization of the properties of the elements. We know that elements are said to be in the same group if they do have the same properties.
The elements that are in the same group with neon are the elements argon, krypton. These elements would have the same properties and they would tend to behave in a similar way.
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What does circulation look like in an newborn?
Answer:
During pregnancy, the unborn baby (fetus) depends on its mother for nourishment and oxygen. Since the fetus doesn’t breathe air, his or her blood circulates differently than it does after birth:
The placenta is the organ that develops and implants in the mother's womb (uterus) during pregnancy. The unborn baby is connected to the placenta by the umbilical cord.
All the necessary nutrition, oxygen, and life support from the mother’s blood goes through the placenta and to the baby through blood vessels in the umbilical cord.
Waste products and carbon dioxide from the baby are sent back through the umbilical cord blood vessels and placenta to the mother's circulation to be eliminated.
When magnesium reacts with hydrochloric acid the following result occurs.
A. A solid is formed.
B. There is a color change.
temperature change
C. There is a
D. Energy is taken in.
17. Pedro and Denise were sharing a snack. Pedro drank some hot tea while Denise drank ice water. Which best explains the difference between the molecules in the hot tea and the ice water?
A. The molecules in the ice water move faster than in hot tea.
B. The molecules in the ice water move slower than in the hot tea.
C. The molecules in the hot tea have less energy than in the ice water.
D. The molecules in the hot tea have the same amount of energy as in the ice water.
Pedro and Denise were sharing a snack. Pedro drank some hot tea while Denise drank ice water: (B) The molecules in the ice water move slower than in the hot tea.
Why do molecules move slower in cold water?The molecules in hot and cold water are the same. Each molecule consists of one oxygen atom and two hydrogen atoms. The difference is the rate at which the molecules bounce about.
Because they contain energy, molecules are continually moving. Water molecules travel faster and are literally bouncing off one another when they are in a liquid state as opposed to a solid state. The quantity of potential energy in the liquid decreases as it cools, and the molecules begin to move more slowly.
Option (B) is the correct answer.
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what came first, the chicken or the egg? explain your reasoning, and backup your argument!!
How did the scientists show that organisms and earth changed over times
Answer:
Here,
Explanation:
Scientists can roughly date fossils using radiometric dating, a process that measures the radioactive decay of certain elements. Fossils document the existence of now-extinct species, showing that different organisms have lived on Earth during different periods of the planet’s history.
16. The motion of atoms is affected by temperature. The pictures show water at three different temperatures.
Which order of the pictures indicates decreasing motion of atoms?
A. 1, 2, 3
B. 2, 3, 1
C. 3, 2, 1
D. 1, 3, 2
The order of pictures that indicates the decreasing motion of atoms is 2, 3, 1. Thus, the correct option for this question is B.
What is the effect of the motion of atoms on temperature?The temperature plays a direct role in the movement of atoms. If the atoms or molecules of a substance are moving faster, the substance has a higher temperature. If its atoms or molecules are moving slower, then it has a lower temperature.
Among the picture given, image 2 has a higher temperature thus it shows a higher movement of atoms. While, image 1 has a low temperature as it is ice, thus, it shows a lower movement of atoms.
Therefore, the order of pictures that indicates the decreasing motion of atoms is 2, 3, 1. Thus, the correct option for this question is B.
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Answer:
132
Explanation:
D
4
Developing countries tend to have
high birth rates. Why?
A. better access to birth control
B. more education for women
C. parents have more offspring to help with
chores
D. less risky behavior
Which statement is true about DNA?
OA. It contains a small number of proteins.
OB. It makes proteins line up in a certain order.
C. It produces all the differences among living
D. It packages all the genes in a living thing.HeLP asap please
DNA is a polymer composed of several nucleotides. Genes are the inheritable subunits that carry genetic information and are composed of a varying number of nucleotides. D) It packages all the genes in a living thing.
What is DNA?
DNA is the deoxyribonucleic acid. It carries all the genetic information needed for the organism to accomplish its functions.
This polymer is composed of several monomers known as nucleotides, which joined by their extremes compose the DNA linear molecule.
Genes are DNA fragments that transmit the information needed to specify traits and are inheritable. These fragments are transmitted as units from generation to generation.
Genes are located in the DNA molecule and are composed of varying numbers of nucleotides.
During the cell cycle, when DNA is lax, it is called chromatin. But when cell division occurs and DNA condensates it forms the chromosomes.
DNA is intimately associated with two types of proteins:
histones, which are structural proteins, and non-histone proteins, which mediate different functions of DNA.According to this framework, Option D is correct. It packages all the genes in a living thing.
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Answer:
the awnser is D : it packages all the genes living thing
Explanation:
that outher awnser definetly wasnt helpfull . so i hope this helps:)
Write the letter for the word that best matches the definition
Answer:92877384
Explanation:
A botanist is training a group of volunteers to survey the plants of a mature deciduous forest. The botanist wants to give the volunteers a lecture about the basic plant taxonomy they should know for identifying plants in the forest. What are the basic points the botanist should include in the lecture.
The basic points the botanist should include in the lecture about the basic plant taxonomy they should know for identifying plants in the forest are their life cycle and the species which are present in the area.
What is Botany?This is a term which is referred to as a branch of science which involves the study of the physiology and morphology of plants.
Plants are classified based on various features such as the type of roots, life cycle etc. The species which are present also helps to use their similarities in grouping them thereby making it the most correct points.
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Which of the following evidence supports the theory of plate tectonics? (7 points)
a: The age of rocks and mountains on the edge of neighboring continents varies.
b: Fossils from the same species are found on only one continent.
c: Iron-rich, molten magma rocks no longer align to Earth’s poles in many locations.
d: Grooves created from glacier movement travel in opposite directions on each continent.
Grooves created from glacier movement travel in opposite directions on each continent. This is the proof or evidence of the theory of plate tectonics.
What are the tectonic plates ?It is the solid and massive irregular shaped slab of solid rock, generally composed of continental and oceanic lithosphere.
Glacial grooves on the rocks shows that the various proofs for moving glaciers towards the Atlantic ocean and from the Atlantic oceans onto the South America.
When oceanic or continental plates slide past each other in opposite directions or even in the same direction but with a different speeds and at that time a transform boundary is formed.
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Drag the labels to identify the components of whole blood after centrifugation.
The dragging of labels in order to identify the components of whole blood after centrifugation is as follows:
Top layer: Plasma.Middle layer: Buffy coat, Platelets, Leukocytes. Bottom layer: Erythrocytes and Hematocrit. What is Centrifugation?Centrifugation may be defined as a type of biotechnique that significantly involves the utilization of centrifugal force in order to separate particles from a solution according to their size, shape, density, medium viscosity, and rotor speed.
According to the context of this question, the upper layer is the least dense which consists of about 55% of the total blood. While the bottom layer is the most dense component which consists of about 45% of the total blood.
Therefore, the dragging of labels in order to identify the components of whole blood after centrifugation is well described above.
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Explain the ages of crustal rock using evidence of the past and current movements of continental and oceanic crust and the theory of plate tectonics.
Crustal rocks are found on the Earth's crust. Their age can be determined by measuring how far they have moved from the ridge.
What are Crustal rocks?Crustal Rocks are the rocks which are found on the earth's crust. The continental crust layer is made up of three different types of rocks. These rocks include Sedimentary, Metamorphic, and Igneous rocks.
Most of the crustal rocks are formed before 2.5 billion years ago and are located in cratons. Such an old continental crust is less dense than elsewhere in the Earth and are not readily destroyed by any kind of subduction.
These rocks get older as they move away from the ridge layer, indicating the crust is moving which is explained in plate tectonic theory. The oldest rocks could be found near the edges of the continent.
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Professionals in the field of psychology maintain a set of core values and ethics that differs slightly from
those held by social workers, because the needs and challenges of psychology patients are typically greater
than for clients who receive social services. Among the core values of psychologists are the efforts to treat
clients with fairness and honesty, to respect clients, and to
O discuss one client's problems with other clients
O do no harm to clients
O dispense prescriptions to clients
O criticize clients
Among the core values of psychologists are the efforts to treat clients with fairness and honesty, to respect clients, and to do no harm to clients and is denoted as option B.
Who is a Psychologist?This is referred to as a trained mental health professional who helps people handle their mental health challenges through the use of various types of methods and techniques.
They are involved in the treatment of clients with fairness and honesty which is a sign of respect and are not involved in dispensing of prescriptions to clients which is instead done by psychiatrists thereby making option B the correct choice.
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