1. How scientists delineate the boundary between atmosphere layers and outer space? 2.What will happen if oxygen percentage is high in our air?

3.What will happen to any molecules or ions that go into the exosphere

4.Why is air called a mixture of gases

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1.The exosphere is the uppermost region of Earth's atmosphere as it gradually fades into the vacuum of space.

2. The increased amount of oxygen your body is getting could also lead to some serious long-term health problems. With the increased levels of oxygen humans would have an increased chance of oxygen toxicity. ... Well with more oxygen in the atmosphere everything would catch on fire more easily.

3.Most gas particles in the exosphere zoom along curved paths without ever hitting another atom or molecule, eventually arcing back down into the lower atmosphere due to the pull of gravity.

4.Air contains oxygen and nitrogen as its major constituents of air. These gases retain their properties in air. So the air is called a mixture.

Explanation:

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