An ecosystem is a community of living organisms and their nonliving environment. , , Producers create their own food using the process of photosynthesis. , , The raw materials of respiration include: oxygen and sugar. , , The products that come out of respiration include: energy, carbon dioxide and water. , , Matter is anything that has mass and takes up space. , , Energy is the ability to do work. , , The law of conservation states that matter and energy are never lost or gained. Matter and energy are recycled or transferred. , , A parasite harms a host but gains a benefit for itself. , , Mutualism is an symbiotic relationship in which 2 parties benefit from each other. , , Ecology is the study of how organisms interact with each other and their environment. , .

Ecology

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