Which statement is true of a placenta?a. The placenta passes oxygen, nutrients, and other useful substances from the fetus to the mother.
b. The placenta passes oxygen, nutrients, and other useful substances from the mother to the fetus.
c. The placenta mixes blood from the mother and fetus together.
d. The placenta protects the mother from being attacked by the fetal immune system.

Answers

Answer 1

Answer: B is the answer. The placenta provides nutrients for the fetus and removes waste from the fetus.

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Which bonds are found inside a water molecule, between hydrogen and oxygen?
Describing the functions of organic compounds match each function to the correct organic compound
Are insects endothermic or ectothermic?
Using the following biomass data, determine which groups is most likely to represent the producers in an area.Group A- 1.5 KgGroup B- 11 KgGroup C- 37 KgGroup D- 809 Kg
Up Name 1. A large pool of trash, known to be the size of 3 Texas, floats around in the middle of the Pacific Ocean. Pollution from humans on land, and boaters in the ocean have created this patch of trash. How does this pool of trash most likely impact the marine life in the Pacific Ocean? A. Different species of marine animals have multiplied. B. Marine animals have died by mistaking trash for food or getting tangled up in it. C. All the marine animals have moved to a new location. D. Marine life has not been impacted in any Way.

How do cells.tissues,organs, and organ systems work together in a multicellular organism?

Answers

First of all, you need to know what cells are.

Cells are the organic building blocks for most organic matter. All cells have cytoplasm,a nucleus, mitochondria, a cell membrane and many other elements,depending on whether they are a plant or animal cell.

Cells live,move, and work together in order to perform a commonfunction.
A Group of cells is called tissue.
Tissues worktogether by combining with other types of tissues in order tocreate an organ, such as your heart.
Different organs function and work together to make a organ system.

Hope this helps! :)

Answer:

In the human body, cells are the basic units of life. Groups of cells working together for a specific function form tissues. Organs are two or more tissues operating together. Even separate organs work together, forming body systems.

Explanation:

How is the theory of evolution an example of a scientific theory?

Answers

Scientific method is an empirical method of knowledge acquisition, involving careful observation, formulating hypotheses based on such observations, testing deductions drawn from the hypotheses, and refinement or rejection of hypotheses based on the results of the tests.ext we have to know what “theory of evolution” we’re talking about. Let’s begin with the theory proposed by Charles Darwin in the Origin of Species.

I don’t know what “No assumptions here” in the question details is supposed to mean. Making hypotheses is part of the scientific method. Maybe it means that a hypothesis is assumed subject to verification, while an assumption is an axiom not subject to test. The scientific method makes testable hypotheses but never makes firm assumptions.

Darwin made a lot of observations. Then he made two hypotheses:

The observed variation among individuals can accumulate to produce all the differences we observe among species.

The effect of these variations on the ability of a living entity to survive and reproduce preserves some variations and eliminates others.

The heritability of variations was essential to the theory, but it was an observed fact, not an assumption or a hypothesis.

Because Scientific method is an empirical method of knowledge acquisition, involving careful

Many plant seeds do not sprout if the environmental conditions are not ideal. The seeds go into a state of lowered metabolic activity until environmental conditions improve. What is the term for this state? acclimation germination hibernation dormancy

Answers

hibernation
it's kind of like animals do in the winter
except theyre plants

Which part of the brain is indicated by the arrow below?Cerebrum
Cerebellum
Pons
Medulla oblongata

Answers

Answer: Cerebrum because it is the largest part of the brain

A bean plant is heterozygous for seed shape. Its seeds are smooth.Which conclusion is best supported by the information?

Having smooth seeds is a recessive trait.
Having smooth seeds is a dominant trait.
Both parents had a recessive allele for seed shape.
Neither parent had a recessive allele for seed shape.

Answers

A bean plant is heterozygous for seed shape. Its seeds are smooth. Having smooth seeds is a dominant trait is best supported by the information.

What is trait ?

Traits are the attributes of an organism which are influenced by the environment and expressed by genes, the Physical features of an organism, such as hair color, leaf form, size, behavioral characteristics,

Species with substantial variation in traits For example, white-tailed deer in Pennsylvania have seed coat color with limited variation, all the organism have characteristics are genetic traits or behavioral traits.

Genetic Traits can be defined as the genes that one gets from both parents influence, the Individual and independent traits are defined by genes, which are encoded by unique portions of our DNA.

For more details regarding traits , visit

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Answer:

Explanation:

juat got done with science test edge 2021

How do some producers and consumers each rely on light from the sun

Answers

if the sun does not shine then the grass and other plants (or producers) cannot grow, if the grass cannot grow, food does not exist for the primary consumers such as grass hoppers, which means the frogs have nothing to eat, and the foxes have nothing to eat and so on so forth.
The consumers rely on the producers and producers rely on the sun, without one or the other a food chain does not work.

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In a family of four children, all four children have blond hair and blue eyes. Which statement best explains why all four children have blue eyes? A.All four children are the same gender.B.All four children have genes for blue eyes.C.All four children have the same type of diet.D.All four children are the same height.Please help

Question 12After many cell divisions, a segment of DNA has more base pairs than it originally did. Explain what has happened.Can you please help me with this, that'd be great! Thanks!