Organisms compete because they have to. Species can compete with other species (interspecific competition) for things like food, space, water, sunlight. Members of the same species can also compete with eachother (intraspecfic competition) for the same things, but also for things such as mates. If a species doesn't compete, it will die.
The result of competition is evolution. For example...on the Galapagos islands, finches (birds) competed with eachother for the small number of seeds from trees. When all of a sudden in one bird a mutation occured where the shape of its beak changed, so it could eat seeds from a different type of tree, that none of the other finches could. If there hadn't of been competition, the bird probably wouldn't have changed its habits much, but because there was such fierce competition, the bird exploited its new talent, and ate a lot of the new types of seed. Over time, this successful new adaptation was passed on from generation to generation, resulting in a new species of finch...
The result of competition is evolution. For example...on the Galapagos islands, finches (birds) competed with eachother for the small number of seeds from trees. When all of a sudden in one bird a mutation occured where the shape of its beak changed, so it could eat seeds from a different type of tree, that none of the other finches could. If there hadn't of been competition, the bird probably wouldn't have changed its habits much, but because there was such fierce competition, the bird exploited its new talent, and ate a lot of the new types of seed. Over time, this successful new adaptation was passed on from generation to generation, resulting in a new species of finch...
