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| Competition |
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| Commensalism |
A competition interaction is between two species or organisms where the fitness of a species/organism is lowered with the presence of another species/organism. The shortage of resources such as food, water, and territory that both species/organism require the use of. Competition happen both within the species/organism and between species/organisms. Competition is one of the biotic and abiotic that affect community structure. Interaspecific competition is competition between two different species. An example of competition interaction is when two trees are growing next to each other and are competition for sunlight.
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| Mutualism |
Commensalism is an interaction where one organism benefits the other organism but the organism being used isn't damaged or harmed. A good example of commensalism are condors, condors eat dead animals and benefit from the meat. Another example is like in the picture above a fish living in an under water plant, the fish can hide from predators in the plant and the plant doesn't get harmed by the fish. Mutualism is when two organisms or species interact and both of them benefit from each other. Like in the picture above of the bee and the flower both of these organism benefit from each other, the flower gets pollinated by the bee and the bee gets pollen to make honey for its hive.
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Predation
A predation interaction is were a predator feeds on its prey. The prey in this case the prey could of already been dead or killed by the predator. The act of predation always has the result of the prey being dead. A spider going in to kill its captured meal of an insect would be an example of predation. Or a barn owl capturing and eating a field mouse. |
A parasitism interaction is a relationship between two organisms or species where one organism benefits at the expense of the other organism. The parasite would benefit from its host while the host suffered or slowly dies while the parasite thrives. Parasites could also be a virus or bacteria. A mosquto feeding of a live animal is an example of parasitism because the mosquto would gain from the host but the host not only doesn't gain from the parasite but also loses nutrients.
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Parasitism
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