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

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Trust me its right. you are welcome

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

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

Thank you! :)

To find the answers to these questions, we can refer to scientific research and data.

1. The most abundant gas in Earth's atmosphere is nitrogen (N2), making up about 78% of the total composition.

2. The second most abundant gas is oxygen (O2), which makes up about 21% of the atmosphere.

3. The third most abundant gas is argon (Ar), accounting for about 0.93% of the atmosphere.

4. Gases that are present in concentrations much less than 1% are called trace gases or trace elements. Examples of trace gases include carbon dioxide (CO2), methane (CH4), ozone (O3), and water vapor (H2O).

5. Two important greenhouse gases in our atmosphere are carbon dioxide (CO2) and methane (CH4). These gases trap heat in the Earth's atmosphere, contributing to the greenhouse effect and climate change.

6. Two human activities that add greenhouse gases to the atmosphere are burning fossil fuels for energy and transportation and deforestation.

7. The special layer of the atmosphere that absorbs UV light, protecting life on Earth, is called the ozone layer. It is located in the stratosphere.

8. The human-made chemical that caused the hole in the ozone layer is called chlorofluorocarbons (CFCs). They were commonly used in aerosol cans, refrigeration, and air conditioning systems until they were phased out due to their harmful impact on the ozone layer.

9. Two natural activities that can affect the composition of the atmosphere are volcanic eruptions, which release large amounts of gases and particles into the atmosphere, and biological processes like photosynthesis and respiration, which contribute to the exchange of carbon dioxide and oxygen between organisms and the atmosphere.