The water cycle provides fresh water for plants and animals on land before draining into the seas. Water is continuously evaporated and precipitated
Water vapour from oceans, lakes and rivers rises due to heat energy from the sun. This creates clouds which are made up of tiny droplets of water.
The carbon cycle returns carbon from organisms to the atmosphere as carbon dioxide to be used by plants in photosynthesis.
Carbon enters the food chain through producers such as plants or algae. It then moves along the food chain until it reaches decomposers who break down dead organic matter releasing carbon dioxide back into the air.