carbon cycle - The processes and events involved in recycling carbon in the environment., combustion - The process of burning by heat., finite resource - Resource that can only be used once and is in limited supply. For example, oil is a finite resource., fossil fuel - Natural, finite fuel formed from the remains of living organisms, eg oil, coal and natural gas., non-renewable - A resource that cannot be replaced when it is used up, such as oil, natural gas or coal., photosynthesis - A chemical process used by plants to make glucose and oxygen from carbon dioxide and water, using light energy, respiration - The chemical change that takes place inside living cells, which uses glucose and oxygen to release the energy,

Carbon cycle

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