What is parasitism?
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Why is leguminous crop rotation used in agriculture?
Which is the autotrophic group responsible for the production of most part of the molecular oxygen of earth?
What are biomass pyramids? What do they represent?
Define ammensalim?
What is numeric pyramid? What does it represent?
What is the gross primary production of an ecosystem? How does GPP relate to photosynthesis?
What is the carbon cycle?
What do you mean by eutrophication?
How is carbon dioxide made by producers and consumers?
What are biomass pyramids?
What are the differences between the age pyramids of developed and under developed countries?
What is biologic control?