What is the typical conformation of the age pyramids of underdeveloped countries?
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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?
What is a biome?
What is the gross primary production of an ecosystem?
What are biomass pyramids? What do they represent?
What is plutonium reprocessing?
How are the heterotrophic beings divided in the ecological study of food interactions?
What is the climax stage of an ecological succession?
Explain some examples of parasitism?
What is the most abundant form under which nitrogen is found in nature?
Define the nitrogen cycle?
What is population growth rate?
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?