Which picture refers to water pollution?

Which type of environmental pollution is presented in this picture?

People cut down a large number of trees. Which environmental problem does it refer to?

A period with no rain is called ____________

Thick forest in the tropical part of the world.

Which gas is mainly responsible for the green house effect?

The place in which a plant, animal, bird or fish normally lives is its _____________

No longer existing, as an animal species.

An animal that eats plants and meat is a(n) __________.

Endangered animals _______________.