Unit 2 - Biology

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.