The answer you are looking for is "<span>a. elements of ecosystems are mutually dependent on each other ".</span>
Answer:
stratosphere
Most ozone (about 90%) is found in the stratosphere, which begins about 10–16 kilometers (6–10 miles) above Earth's surface and extends up to about 50 kilo- meters (31 miles) altitude. The stratospheric region with the highest ozone concentration is commonly known as the “ozone layer” (see Figure Q1-2).
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Answer: C
Geography is used to tell people where something is, like for example:
<em>The Eiffel Tower is in Paris.</em>
It also is used to help people understand how nature affects their communities. For example:
<em>A hurricane can destroy your home.</em>
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Hope this helps!
I think it's hibernation. Hope that helped x
Can you please give more context to the question?