What is the primary energy source for life on earth?
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What are the environmental harms caused by mercury pollution? What are the main sources of mercury pollution?
What is the most abundant form under which nitrogen is found in nature?
What are the main sources of mercury pollution?
Explain the typical vegetation and the typical fauna of the deserts?
Explain nitrogen cycle?
Define ecosystem in your own language?
Explain remediation?
What is an ecosystem?
Why does this field interest you?
What are colonies and societies?
What are primary consumers? Can food chain present quaternary consumers without having secondary or tertiary consumers?
Define carbon cycle?