What are the typical vegetation and the typical fauna of the tropical forests?
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How are the grasslands of North America and of South America respectively called?
How are grasslands classified?
Why is the sun the “motor” of the water cycle?
What does numeric pyramid represent?
Explain pops?
What is biodiversity?
What is eutrophication?
Explain the main characteristics of the age pyramids of developed countries?
Explain the difference between the concepts of food chain and food web?
What are primary consumers? Can food chain present quaternary consumers without having secondary or tertiary consumers? Can a tertiary consumer of one chain be a primary or secondary consumer of another chain?
What is the group of aquatic beings composed of large number of photosynthetic beings?
In the short range what will happen to the levels above and below a population of secondary consumers of a numeric pyramid if a large number of individuals from this population dies?