What are the analyses provided by the study of human age pyramids?
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Define ecosystem in your own language?
Why is leguminous crop rotation used in agriculture?
What is the main means by which autotrophic beings obtain energy?
Why does thermal inversion increases air pollution?
What are intraspecific and interspecific ecological interactions?
Is pollution always caused by humans?
What is the most abundant form under which nitrogen is found in nature?
What are abiotic factors?
How can the abundance and diversity of living beings in the tropical forests be explained?
Explain how are ecological interactions classified?
What are species?
What are age pyramids?