SEV1a - Ecosystems & Levels of Organization

All of the organisms living in an area together with their physical environment.

• community
• ecosystem
• habitat
• population

The nonliving parts of the ecosystem.

• biotic
• abiotic
• habitat
• niche

The living  and once living parts of the ecosystem.

• biotic
• abiotic
• habitat
• niche

An individual living thing.

• niche
• habitat
• species
• organism

A group of organisms that can mate to produce fertile offspring.

• organism
• species
• habitat
• niche

All the members of the same species that live in the same place at the same time.

• organism
• community
• population
• habitat

A group of various species that live in the same place and interact with each other.

• niche
• habitat
• species
• community

The place an organism lives.

• habitat
• niche
• population
• species

The role and position a species has in its environment; how it meets its needs for food and shelter, how it survives, and how it reproduces

• habitat
• population
• niche
• organism

The process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution.

• evolution
• artificial selection
• natural selection
• resistance