What are the typical vegetation and the typical fauna of the temperate forests?
What are tropic levels? How many tropic levels can a food chain have?
How is energy transferred along a food chain?
How do biodiversity, the total number of living beings, and the biomass respectively vary during the ecological succession?
What are the main interspecific ecological interactions?
What are deciduous trees?
Is herbivorism a form of predatism?
What is population density?
What is an ecosystem?
What are the typical vegetation and the typical fauna of the tundras?
How does biological diversity relate to the characteristics of the abiotic factors of an ecosystem?
What is protocooperation?
What are some examples of migratory animals?
What is the most abundant form under which nitrogen is found in nature?
What is ecological succession?