Why is the sun the “motor” of the water cycle?
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Define global warming?
How does npp relate to the energy pyramids?
What is biosphere?
Explain some examples of migratory animals?
What is protocooperation?
What do energy pyramids represent?
What are biotic factors?
What are heterotrophic beings?
What are deciduous trees?
What are the processes that autotrophic beings use to produce organic material from inorganic substances?
What do numeric pyramids represent?
Explain the typical conformation of the age pyramids of underdeveloped countries?