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Explain the main limitations for population growth
What is competition?
Which is the autotrophic group responsible for the production of most part of the molecular oxygen of earth?
What are the differences between the age pyramids of developed and under developed countries?
How does net primary production relate to the energy pyramids?
What are persistent organic pollutants (POPs?
Define water cycle?
Can a tertiary consumer of one chain be a primary or secondary consumer of another chain?
What is the most abundant form under which nitrogen is found in nature?
Besides mercury which other heavy metals cause toxic pollution?
What are persistent organic pollutants?
What is the role of the pioneer species?
What is the carbon cycle?
Give an account of the classification of ecology?
How does net primary production(npp) relate to the energy pyramids?
