How are the grasslands of North America and of South America respectively called?
What are the phytoplankton and the zooplankton?
Define an ecosystem?
Under which form is nitrogen fixed by the living beings.
What are the main chemical compounds that destroy the ozone layer?
What is the most abundant form of nitrogen in nature?
Explain what is the most abundant form under which nitrogen is found in nature?
What is population density?
How can a great biological diversity protect an ecosystem from environmental damages? Why are less biodiverse ecosystems under the risk of suffering deep biological harms if submitted to even small changes?
What are colonies?
What is biotic potential?
Why does this field interest you?
What is the typical fauna of the tropical forests?
Is the upward move of the warm air good or bad for the dispersion of pollutants?
What are the main characteristics of the age pyramids of developed countries?
