Explain the main chemical compounds that destroy the ozone layer?
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What is the gross primary production of an ecosystem? How does GPP relate to photosynthesis?
Define biotic potential?
What is nekton?
In a numeric pyramid to which tropic level does the base always refer?
What is the water cycle?
What is selective waste collection?
Explain what are the main limiting factors for the growth of a population?
What is a community? What is the difference between the concepts of community and population?
What are the three main types of tropic pyramids studied in Ecology?
Explain some examples of parasitism?
Define population density?
Can a tertiary consumer of one chain be a primary or secondary consumer of another chain?