How many tropic levels can a food chain have?
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Explain the main biological process that consumes carbon dioxide?
Define population density?
Explain ammensalism?
Which is the autotrophic group responsible for the production of most part of the molecular oxygen of earth?
Which type of energy is the light used in photosynthesis transformed.
What is biodiversity?
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?
Explain the main interspecific ecological interactions?
Define parasitism?
What is the formula of the net primary production (NPP)? How does NPP relate to the energy pyramids?
What is a community?
What are pioneer species? What is the role of the pioneer species?