Explain the main chemical compounds that destroy the ozone layer?
What is the gross primary production of an ecosystem?
What is the role of the ozone layer for the living beings?
Why does thermal inversion increases air pollution? Which harms can thermal inversion cause to humans?
How can the abundance and diversity of living beings in the tropical forests be explained?
Explain the predatism?
Explain what are fossil fuels?
what is transgenic food and its health hazards?
What are the main causes of the loss of the biological diversity nowadays?
What are plankton, nekton, and benthos?
How many tropic levels can a food chain have?
Explain the main limitations for population growth
How different are the concepts of migration, emigration, and immigration
What is gpp?
What are the typical vegetation and the typical fauna of the taigas?