Define the nitrogen cycle?
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What are abiotic factors?
What is age pyramid?
Explain how can the abundance and diversity of living beings in the tropical forests be explained?
How does gross primary production(gpp) relate to photosynthesis?
How does gpp relate to photosynthesis?
Does thermal inversion occur in the winter or in the summer?
What are the processes that autotrophic beings use to produce organic material from inorganic substances?
What are plankton, nekton, and benthos?
What are the advantages of leguminous crop rotation in agriculture?
How does net primary production(npp) relate to the energy pyramids?
What are the main characteristics of the age pyramids of developed countries?
What are species?