What are persistent organic pollutants (POPs?
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What are tropic levels?
Why does thermal inversion increases air pollution? Which harms can thermal inversion cause to humans?
Explain water cycle?
In a numeric pyramid to which tropic level does the base always refer?
What are the environmental harms caused by mercury pollution? What are the main sources of mercury pollution?
What are the major terrestrial biomes?
Define an ecosystem?
How can the abundance and diversity of living beings in the tropical forests be explained?
Explain global warming?
What is parasitism?
What is numeric pyramid?
Define parasitism?