Which Statements About Ozone Depletion, Global Warming, and the Endangerment

Which statements about ozone depletion, global warming, and the endangerment of biological diversity are true?

A) Biodiversity is the need to have alternative sources of energy, as we are too dependent upon oil.
B) All three of these problems are similar because they are natural environmental issues that have been caused primarily by pollution.
C) Ozone is an oxygen-related gas that floats in a thin layer in the stratosphere between 8 to 25 miles about the earth.
D) Ozone is not very vital to living things on earth.
E) The atmosphere of the earth is heating up, causing potential danger through the greenhouse effect.

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