Question

What gas is there the most of in the earth’s atmosphere? Which gas is most abundant?
What gas is the 2nd most abundant in the earth’s atmosphere?
What gas is the 3rd most abundant in the earth’s atmosphere?
What are gasses called that are present in concentrations much less than 1%?
Name 2 important greenhouse gasses in our atmosphere:
Name 2 human activities that add greenhouse gasses to the atmosphere:
What special layer of the atmosphere absorbs UV light, protecting life on earth?
What human made chemical caused the hole in the ozone layer?
Name 2 natural activities (non-human) that can affect the composition of the atmosphere

Answer 1

We do not do your homework for you. Although it might take more effort to do the work on your own, you will profit more from your effort. We will be happy to evaluate your work though.

However, I will give you a start:

According to NASA , the gases in Earth's atmosphere include: Nitrogen — 78 percent Oxygen — 21 percent Argon — 0.93 percent

Answer 2

Here is a link to help also. PsyDAG is right. Do your own work. It will pay off in the end. https://www.space.com/17683-earth-atmosphere.html

Answer 3

Thank you! :)

Answer 4

B.
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Trust me its right. you are welcome