Poor Billy. He was accidentally shot and killed with an arrow by a hunter that thought he hit a tree, and missed the deer. He left the dead animal behind to be eaten until he was nothing but a pile of bones and the few remnants from the animals' feast. But the bones don't stay there forever, so what happens to them? Well, this is where decomposers, like a mushroom, comes in.
A decomposer is an organism that decomposes organic material. The role of a decomposer in the carbon cycle is it helps reclaim carbon from dead organisms so it can go back into the carbon cycle.
Cellular respiration by definition is the process of breaking sugar into a form the cell can use as energy. This creates ATP. The process of cellular respiration is consuming food, then extracting energy from the food you just ate. Cellular respiration contributes to the carbon cycle because the glucose is turned into carbon dioxide, which is used in photosynthesis.
Some examples of organisms that undergo cellular respiration ants, flowers, rabbits, humans, trees, and butterflies.
Fossil fuels are a natural fuel (ex. coal/gas) formed from the remnants of a living organism. When humans burn fossil fuels, the carbon that was stored inside become released into the atmosphere as carbon dioxide. The carbon then cycles anywhere it wants, which can disturb the balance of the natural amount of the carbon available, changing the way that process occurs.
The process of photosynthesis starts with the plant taking carbon dioxide in from the atmosphere, and through the stomata on the plant's leaves. Next, water gets into the plant and finds its way to the leaves where photosynthesis occurs. Chlorophyll traps the energy from sunlight as it shines on the leaf. The solar energy breaks water down into hydrogen and oxygen. Then hydrogen is combined with carbon dioxide to make sugar, and oxygen gets released as a product. Photosynthesis fits into the carbon cycle because plants need carbon dioxide to survive, and animals depend on oxygen to survive.