All life on earth

At the bottom of the energy pyramid, produces it's own energy

A group of similar organisms that can breed and produce fertile offspring

A network of feeding interactions

A lion in the savanah

Living and non-living things in an ecosystem

An organism that eats plants and meats

A group of individuales that belong to the same species and live in the same area

10% of energy is transfered from one organism to the next

Any necessity of life

The study of interactions in a biophere

Primary consumer, secondary consumer, tertiary consumer

An assemblage of diffrent populations that live together in a defined area

A series of steps in which organisms transfer energy by eating and being eaten

The range of physical and biological conditions in which a species lives

Observation, modeling, and experimentaion

Makes it's own food

All organisms that live in a place with their physical environment

Each step of the food chain/ food pyramid

Something that causes species to divide resouces

Looking at factors, modeling an ecosystem, and experimintaion to test a hypothesis

Conversion of chemicals to create energy

A group of ecosystem that share similar climates and oganisms

An example of a primary producer

The ability to survive and reproduce under a range of environmental circumstances