Unit 2 - Biology

Ecology

Ecology

Science of the relationships on Earth

Abiotic

Never lived

Biotic

Lived or was once living

Population

Group of organisms that are all the same species

Community

All populations @ the same place @ the same time

Commenalism

+/o

Ecosystem

All biotic and abiotic factors in a area

Biosphere

All of the ecosystems on the planet - Earth

Habitat

Natural home of an organism

Niche

A habitat providing the necessary requirements for an organism to thrive

Symbiosis

Close relationships in an ecosystem - symbiosis

Mutualism

+/+

Parasitism

+/-

Predation

When a animal hunts and kills another for food

Competition

Interactions between species to get a commonly needed resource

Autotrophs

An organism that can produce its own food

Heterotrophs

An organism that uses other organisms for food

Producers

organisms that make their own food/become food for other organisms in the ecosystem

Consumers

organisms that eat others for food

Food chain

a hierarchical series of organisms each dependent on the next as a source of food.