B. hydrosphere
Why? The hydrosphere contains all the waters on the earth's surface, including atmospheric moisture, such as clouds.
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the most important to the survival of the ecosystem is sunlight
Answer:
1. Specify the Null Hypothesis.
2. Specify the Alternative Hypothesis.
3. Set the Significance Level
4. Calculate the Test Statistic and Corresponding P-Value.
5. Drawing a Conclusion.
Explanation:
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