All the living things in an area and the way they affect each other and the environment
ecosystems (n)
Energy sources, such as gas, coal, and oil, that were formed underground from plant and animal remains millions of years ago
fossil fuels (n)
The mixture of gases around the earth
atmosphere (n)
To say or do something to show that you disagree with something or think it is bad, especially publicly
protest (n)
The rise in temperature of the earth's atmosphere, caused by an increase of gases such as carbon dioxide in the air surrounding the earth
the greenhouse effect (n)
Changes in the world's weather, in particular the fact that it is believed to be getting warmer as a result of human activity
climate change (n)
Types of energy that can be replaced naturally such as energy produced from wind or water
renewable energy (n)
Not harmful to the environment, or trying to help the environment
environmentally-friendly (adj)
The cutting down of trees in a large area, or the destruction of forests by people.
deforestation (n)
Any of the gases that are thought to cause the greenhouse effect, especially carbon dioxide
greenhouse gas (n)
An increase in world temperatures caused by the greenhouse effect
global warming