Carbon is part of the oceans, air, rocks, soil, and all other living things. It is always moving from place to place. Carbon moves from the air to plants. In the atmosphere, carbon is attached to oxygen in the form of carbon dioxide. With the process of photosynthesis, the plants use the carbon dioxide and sunlight to make food for it. Then the carbon moves from the plants to the animals. It moves to the animals when they eat the plants. Animals that eat other animals get carbon from the animals that eat the plants. When the plants and animals die, their bodies decay and bring the carbon into the ground. Some animals, buried deep underground, form fossil fuels after millions of years. Carbon also moves from living things into the atmosphere. Every time people exhale, carbon dioxide gas is released into the atmosphere. Carbon moves from fossil fuels to the atmosphere when the fuels are burned. When the fuels are burned, they return to the atmosphere as carbon dioxide gas once again.  Carbon dioxide is moved from the atmosphere to the oceans. The oceans and other bodies of water pick up carbon from the atmosphere when it rains and also through absorption.

http://www.windows2universe.org/earth/Water/co2_cycle.html,

November 6, 2012 2:16 pm