- The carbon cycle is the continual movement of carbon throughout different systems on Earth
- The carbon cycle includes four primary reservoirs for carbon: the atmosphere, land-living animals and plants, the oceans and in sediments, including fossil fuels.
- Some objects can store carbon for many years and are known as carbon sinks. One example is fossil fuels.
- Fossil fuels are the remains of plants and animals that lived millions of years ago.
- Plants use carbon dioxide in the air to make their own food in a process called photosynthesis.
- Carbon dioxide is a greenhouse gas and so traps heat in the atmosphere. Without greenhouse gases it would be too cold on Earth for life to survive.
- There is about 30% more carbon dioxide in the air today than there was about 150 years ago, and Earth is becoming a warmer place.
- Carbon moves from plants into animals when they eat plants or other animals.
- Carbon is the fourth most abundant element in the universe.
- The origin of the word carbon comes from the word carbo which is Latin for coal.
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By Gemma Young for Smart Learning