What important adaptation helped protect organisms of the early cambrian period?

Answers

Answer 1

Answer:

The right answer is hard body parts.

A significant change in the environment is a challenge for existing animals; those who until then were perfectly adapted to their environment soon see their existence become more difficult and, natural selection being at work, it is essential that their direct descendants "adapt" to the new conditions under penalty of being eliminated.

Strange animal lineages were identified during this period: some are found in current offspring but most have disappeared without trace: animals that did not give offspring were as well-armed as the others to survive and the others had "found" very ingenious adaptations.

Answer 2

Answer: The hard body parts the organisms had.

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The rate of which organic matter is created by producers in an ecosystem is called?

Answers

primary productivity

Mother nature and deforestation?

Answers

Answer: Deforestation is bad for mother nature. The reason for this is because deforestation is cutting down trees and in that way we are destroying mother nature's gifts to us.

The loss of trees and other vegetation can cause climate change, desertification, soil erosion, fewer crops, flooding, increased greenhouse gases in the atmosphere, and severe problems for indigenous people. Some deforestation is caused by a combination of human and natural factors like, wildfires and overgrazing, which may prevent the growth of young trees.

A person withAIDS is likely to develop infectious disseases because the virus that causes AIDSa)Destroy cancerous cells
b)damage the immune system
c)Increases the rates of antibody production
d)Increases the rate of microbe destruction

Answers

Hey there!

AIDS stands for acquired immune deficiency syndrome and it indeed does damage the immune system. It causes the loss of immunity which therefore decreases the body's resistance to infections.

Thus, the correct answer is B.

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Which of the following are considered protein factories?Question 5 options:

DNA
ribosomes
mRNA
amino acids

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the answer is ribosomes

DNA is made of 2 chains of nucleotides. which type of bonds hold the chains rogether?

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Hydrogen bonds hold the nitrogen-containing bases of each DNA strand together. Adenine (A) and Thymine (T) are held together by two H-bonds, and Cytosine (C) and Guanine (G) are held together by three.

Isaac Newton's investigations of gravity explained which of the following?Gravity acts on all objects in the universe.

Jupiter has more moons than earth.

The sun is more massive than earth. <---??

Earth is not the center of the universe.

Answers

Gravity acts on all objects in the universe.

Answer:

the answer is a

Explanation:Gravity acts on all objects in the universe

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