8th Grade Science Ecology
Terms in this set (10)
a community of living organisms (plants, animals and microbes) along with the nonliving components of their environment (things like air, water and mineral soil), interacting as a system.
living, or once living, organisms
physical, not alive. For example, rocks, soil, weather
Density Dependent Limiting Factor
In population ecology the density dependent factors depend on the size of the population. For example, food and water are both density dependent, the more organisms there are in the population, the more competition there is for these
Density Independent Limiting Factor
In population ecology, the density independent factors do NOT depend on the size of the population. For example, a forest fire (or pollution, or a changing climate) will limit the number of organisms no matter how many there are.
A biological interaction where one organism feed on another.
in biology and ecology, competition is a contest between organisms, animals, individuals, groups, etc., for territory, a niche, for resources and mates.
a relationship where two organisms are interconnected or dependent on each other.
is a symbiotic relationship between species, where one species, the parasite, benefits at the expense of the other, the host. One benefits, the other is harmed.
A symbiotic relationship where both species benefit
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