3 years ago

What is 99.9 percent of the air we breathe?

2 answers:

8 0

I believe most of what we breathe is nitrogen and oxygen. There are small amounts of other gases as well, but the air we breathe is primarily made up of oxygen and nitrogen.

MrMuchimi3 years ago

3 0

Oxygen i think
hope this helps

You might be interested in

Select the correct answer.

torisob [31]

Answer:

The garden.

Explanation:

There is more organisms doing photosynthesis(the process turning sunlight, water, and carbon dioxide into energy and oxygen) in the garden because there are more plants in the area.

7 0

3 years ago

What piece of evidence supports the viral model presented in Viewpoint #2 that viruses are non-living?

oksian1 [2.3K]

Answer:

b. viruses do not undergo mitosis

Explanation:

One characteristics of non-living things is their ability to reproduce. Viruses on their own lack this ability to reproduce their kind. Mitosis is a form of reproduction where one cell divides to form two daughter cells. Viruses do not undergo mitosis.

Viruses are just an assembly of biochemical particles that need to gain entrance into a living cell to be able to multiply.

5 0

2 years ago

If the concentration of phosphate in the cytosol is 2.0 mM and the concentration of phosphate in the surrounding fluid is 0.1 mM

Flauer [41]

B I think I’m not quite sure though

3 0

3 years ago

How do scientists explain the great diversity of life on earth? Different characteristics help _____.

mote1985 [20]

Its d .........................

5 0