What is the nitrogen cycle?
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What is nekton?
What is competition? Which type of ecological interaction is competition?
Explain how are the grasslands of north america and of south america respectively called?
Define species?
What are the main characteristics of the age pyramids of developed countries?
Which type of energy is the light used in photosynthesis transformed.
How does net primary production relate to the energy pyramids?
What is parasitism?
What is the difference between primary ecological succession and secondary ecological succession?
What is dry mass?
Explain some examples of interspecif competition?
What are some examples of parasitism?