Why dose cold air sink

Answers

Answer 1

Answer:

Because it is denser (heavier) then hot air

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the liver of dog has been found to have a higher than normal cell death because of dna is damaged. what part of the cell failed to do its job of protecting the dna of cell

Answers

Answer:

Nuclear envelop

Explanation:

Nuclear envelop is the double membrane structure that makes the boundary of the nucleus. It serves to protect the DNA from the toxins, wastes and other harmful substances produced during metabolic reactions of the cell occurring in cytoplasm.

If the nuclear envelope does not protect DNA, DNA could be damaged by free radicals or toxins. A cell with damaged DNA is subjected to death.

Answer:

The Nucleus.

Explanation:

The nucleus is surrounded by a membrane called the nuclear envelope, which protects the DNA.

In order for chemical digestion to occur, what has to be mixed with the food?

Answers

Well in order for chemical digestion to occur period, a enzyme is needed.

In the mouth this enzyme is amylase

The plasma membrane controls what enters and leaves the cell

Answers

The cytoplasm controls and protects this

Frogs produce a huge number of gametes at one time - WHY do you think this is ( HINT: Finding Nemo)?

Answers

Eggs, the hint wasn't even required. Gametes are sex are an organisms reproductive cells.

Two species interbreed occasionally and produce vigorous, fertile hybrids. When the hybrids breed with each other or with either parent species, however, the offspring are feeble or sterile. These species are affected by

Answers

I think the answer is hybrid breakdown

What are two non living things, cheetahs interact with?

Answers

Anything from the environment, so rocks, dirt, air, water, and light all work.

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The focus is the point underground where Rock layers first move during an earthquake true or false

a female impala has one or two calves and then spends months feeding and protecting them. a female salmon lays thousands of eggs and then returns to the ocean. what are some advantages from each type of life cycle?

Do acids have a low or high pH

The offspring of a particular cross are 100 percent heterozygous for tallness. What were the most likely genotypes of the parents?Tt ´ ttTt ´ Tttt ´ ttTT ´ tt