Is pollution always caused by humans?
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What are deciduous trees?
What is benthos?
What is plutonium reprocessing? Why is it a big environmental issue?
Why does thermal inversion increases air pollution? Which harms can thermal inversion cause to humans?
What is harmonious ecological interaction?
What is population?
How many tropic levels can a food chain have?
Explain how do the availability of water and light and the climate affect the growth of a population?
How can a great biological diversity protect an ecosystem from environmental damages?
Define global warming?
Define harmonious ecological interaction?
Explain some examples of interspecif competition?