Types of energy that can be replaced naturally such as energy produced from wind or water
renewable energy (n)
To say or do something to show that you disagree with something or think it is bad, especially publicly
protest (n)
The mixture of gases around the earth
atmosphere (n)
Not harmful to the environment, or trying to help the environment
environmentally-friendly (adj)
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)
The cutting down of trees in a large area, or the destruction of forests by people.
deforestation (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)
All the living things in an area and the way they affect each other and the environment
ecosystems (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)
An increase in world temperatures caused by the greenhouse effect
global warming
Any of the gases that are thought to cause the greenhouse effect, especially carbon dioxide
greenhouse gas (n)