Explain the main characteristics of the age pyramids of developed 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 are the processes that autotrophic beings use to produce organic material from inorganic substances?
What is predatism?
What is the gross primary production of an ecosystem? How does GPP relate to photosynthesis?
What is age pyramid?
Besides mercury which other heavy metals cause toxic pollution?
Why is leguminous crop rotation used in agriculture?
Explain the main causes of the loss of the biological diversity nowadays?
What are autotrophic beings? What are heterotrophic beings?
What are intraspecific and interspecific ecological interactions?
What are the main causes of the loss of the biological diversity nowadays?
What is benthos?