Besides mercury which other heavy metals cause toxic pollution?
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Why is leguminous crop rotation used in agriculture?
Define ecological succession?
Explain what are fossil fuels?
What is the formula of the net primary production?
What are the benefits can commensalism offer to a species?
Define commensalism?
Explain the major terrestrial biomes?
Why waste is considered one of the major environmental issues?
What is the most abundant form under which nitrogen is found in nature?
What is the respective importance of water for the living beings?
Why does thermal inversion increases air pollution?
Define an ecosystem?