What are the analyses provided by the study of human age pyramids?
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What is the formula of the net primary production (NPP)? How does NPP relate to the energy pyramids?
What is the typical fauna of the tropical forests?
Explain the main intraspecific ecological interactions?
What is the relation between environmental resistance and the population growth according to the biotic potential curve?
What are the destinations of the organic material fabricated by the producers?
What are the main intraspecific ecological interactions?
What are biotic factors?
Can the amount of available energy in a given tropic level to be larger than the available energy in inferior tropic levels? What does that condition means to the conformation of the energy pyramids?
What are species?
What are tropic levels? How many tropic levels can a food chain have?
How do populations of predators and preys vary in predatism?
What is the respective importance of nitrogen for the living beings?