What are tropic levels? How many tropic levels can a food chain have?
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What is the typical shape of a population growth curve?
Into which type of energy is the light used in photosynthesis transformed.
Explain what are fossil fuels?
Define mutualism?
How the biotic potential can be represented in the same graphic?
In the ecological study of food interactions how are the autotrophic beings called?
What are the benefits can commensalism offer to a species?
Explain the analyses provided by the study of human age pyramids?
What are some examples of parasitism?
Why is the sun the “motor” of the water cycle?
What is the group of aquatic beings composed of large number of photosynthetic beings?
What are persistent organic pollutants (POPs?