Within 2 years, in all 5 great lakes. Hundreds of millions of dollars of damage to property. Competition = multiple organisms seek the same limited resources intraspeci c competition vs. interspeci c competition competitive exclusion or species coexistence. Env100 sept 23, 2011 resource partitioning species divide shared resources by specializing in different ways. Character displacement = characteristics diverge to lessen competition exploitative interactions. Predation = individuals of one species capture, kill, and consume individuals of another species. Parasitism = parasite depends on host for nourishment or other bene t. Herbivory = animals feed on the tissues of plants. Coevolution = antagonistic species become locked in a duel of escalating adaptations. May not kill the plant, but affects its growth and survival. Two or more species bene t from their interactions. Symbiosis = organisms live in close physical contact. Pollination: bees, bats, birds and others transfer pollen.