Answer:
A. Coal
Explanation:
The other forms listed are "clean" energy sources.
Answer:
The biosphere is a global ecosystem composed of living organisms (biota) and the abiotic (nonliving) factors from which they derive energy and nutrients. Earth's environmental spheres. Earth's environment includes the atmosphere, the hydrosphere, the lithosphere, and the biosphere.
Explanation:
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Temperature, and Humidity are the two important factors of an ecosystem