Question

Answer the following questions in one sentence.

1. What is the layer of air around the Earth called?

2.What is the composition of air?

3. How do plants obtain nitroge

4.Why is ozone layer important?
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Answer 1

1) The atmosphere is comprised of layers based on temperature.

2) Air is a mixture of nitrogen, oxygen, carbon dioxide, water vapors, some other gases and dust particles.

3) Plants get their nitrogen from the soil and not directly from the air.

4) Although it represents only a tiny fraction of the atmosphere, ozone is crucial for life on Earth.

Answer 2

Answer:

1) troposphere

stratosphere

mesosphere

2) nitrogen

oxygen

co2

hydrogen

3). from soil

4). to protect from ultraviolet radiation