Answer:
False
Explanation:
In the troposphere, near the Earth's surface, human activities lead to ozone concentrations several times higher than the natural background level. Too much of this ground-level ozone is 'bad' as it is harmful to breathe and also damages vegetation.
The stratosphere or “good” ozone layer extends upward from about 6 to 30 miles and protects life on Earth from the sun's harmful ultraviolet (UV) rays.
C. a toy train is the item that has characteristics similar to a scientific model.
Answer:
A if not A then its D
Explanation:
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Fluid, rolling, air resistance, and not sure about the last one.
