The remains of animals and plants that lived a long time ago.

A house made of glass to keep the heat of the sun trapped. This way, plants can grow inside it even when it is very cold outside.

A mass of gases that surrounds and protects the planet

Gases that are found in the Earth's atmosphere that trap the heat just like the glass does in a greenhouse.

The most popular fossil fuel. It provides over 40% of the World's energy.

One of the the greenhouse gases. It is naturally produced when animals and plants breathe. It is also produced when we burn fuels to produce energy.

The ability to make things move or change condition.

A fossil fuel formed from the remains of plants and animals that lived in ancient lakes and seas, just like the way petroleum was formed.

The substances formed from the remains of ancient animals and plants that were burried and stayed under the pressure and of layers of earth for millons of years. Those substances have been our main sources of energy for over 100 years.

A fossil fuel made from plants that grew in swamp areas millions of years ago. Compared to the other fossil fuels, when it is burned, it generates the highest amount of CO2.

Something we burn to generate energy.

A natural processs that keeps the Earth's average temperature mild, making life possible. The Greenhouse gases trap some of the sun rays heat, keeping the average temperature at 15 degrees Celsius.