Ive got a science exam coming up on 8th of december and i need someone to explain what an carbon cycle is and stuff about i. also im 13 so make it age appropriate thanks x
- Study Helper
thanks but ive already checked this website and it doesnt explain properly and i dont understand it at all
Carbon is an element. It's found in a gas called carbon dioxide which is in the atmosphere. Plants take this gas in, and the carbon is transformed into a different form. We call this carbohydrates. Animals then eat the plants (and therefore the carbohydrates) and the carbon then either leaves their body as waste or forms part of their body through growth. Some carbon is also directly given off because of a process called respiration where carbon dioxide is formed and joins the atmosphere again. When the animal dies, organisms called decomposers digest the living matter of the animal and convert the carbon back into carbon dioxide, which goes back into the atmosphere. The cycle then starts over again.
So in this diagram, it shows you fossil fuel emission. Since all living organisms are made up of mainly carbon, and then other elements, when we die, the Carbon is still there. Fossil fuels are made up of loads of dead organisms that build up over the years and get heated by the earth's core and squashed by gravity. So when we burn it for energy, it releases the Carbon and reacts with oxygen in the air and forms Carbon dioxide.
Photosynthesis is a process in plants in which Carbon dioxide is taken in and in the presence of sunlight and water, it produces oxygen and glucose. Plants and all living organisms also respire, which uses up oxygen and glucose and produces waste products Carbon dioxide and water.
Co2 can also diffuse into the ocean from the atmosphere or vice versa.
Decomposing material also becomes part of the soil, and so there's Carbon in the soil etc