Define biosphere?

7

What are persistent organic pollutants (POPs?

11

Explain pops?

11

Define population?

7

Can food chain present quaternary consumers without having secondary or tertiary consumers? Can a tertiary consumer of one chain be a primary or secondary consumer of another chain?

7

How do biodiversity, the total number of living beings, and the biomass respectively vary during the ecological succession?

11

What benefits can commensalism offer to a species?

11

Explain the three main types of tropic pyramids studied in ecology?

7

Explain why the tropical forests are also known as stratified forests?

7

Explain how do the availability of water and light and the climate affect the growth of a population?

7

What is the typical conformation of the age pyramids of underdeveloped countries?

11

What is dry mass?

11

What are societies?

7

What is the formula of the net primary production?

8

What are autotrophic beings? What are heterotrophic beings?

11