What is the main means by which autotrophic beings obtain energy?
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What are the typical vegetation and the typical fauna of the deserts?
What benefits can commensalism offer to a species?
What are societies?
What are the three main types of tropic pyramids studied in Ecology?
What are some examples of interspecif competition?
Why the tropical forests are also known as stratified forests?
What are the environmental harms caused by mercury pollution? What are the main sources of mercury pollution?
What is dry mass?
Why waste is considered one of the major environmental issues?
How different are the concepts of migration, emigration, and immigration
Define an ecosystem?
What are persistent organic pollutants (POPs?