What are the differences between the age pyramids of developed and under developed countries?
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What are the main chemical compounds that destroy the ozone layer?
Why does thermal inversion increases air pollution? Which harms can thermal inversion cause to humans?
Define an ecosystem?
What are the advantages of leguminous crop rotation in agriculture?
What are the main causes of the loss of the biological diversity nowadays?
Define species?
What is pollution?
What is nekton?
what is transgenic food and its health hazards?
What do numeric pyramids represent?
What is the relation between environmental resistance and the population growth according to the biotic potential curve?
Explain the main interspecific ecological interactions?