U4 Review #1: Lessons 1 and 2

Front

Ecology

Back

The study of how living things interact with each other and the environment

Front

cells

Back

Smallest Unit of Living Things

Front

Population

Back

A group of interbreeding organisms of the same species living in the same area

Front

Ecosystem

Back

All living and nonliving features of an environment

Front

Community

Back

All of the different populations of organisms in a set area

Front

Keystone species

Back

The most prominent species in the ecosystem that has the greatest effect on all other species

Front

Hydrosphere

Back

The layer of Earth includes all of the water

Front

Community

Back

The level of organization in an ecosystem includes all the living things in one area

Front

Ecosystem

Back

The level of organization in an ecosystem is defined as all the living and nonliving things in an area

Front

Direct Observation

Back

counting all of the members of a population