The gradual increase of air and sea temperatures caused by rising greenhouse gas levels.

The area where a species naturally lives, eats, and reproduces.

The loss of a species of animal, bird, plant, etc for all time.

A person who cares about the natural world and makes efforts to protect.

Formed from the fossils of plants or animals that died millions of years ago.

A gas in the atmosphere that prevents heat from escaping into space.

Likely to face injury or danger.

Measures to protect and restore the natural world.

Forms of energy that can be replaced naturally.

Engage in a dangerous act.

The planting of new trees in a place where a forest has been badly damaged or destroyed.

Animals or plants in danger of becoming extinct in the near future.

Plants and animals living in a natural environment.

A group of organisms in which each feeds off the one below it in the chain.