Biology Chapter 4 Terms

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Community
A group of various species that live in the same place and interact with one another
Ecosystem
The group along with the living and nonliving enviroment
Habitat
Where an organisms lives
Biodiversity
The variety of organisms in a given area
Succession
The replacement of one community by another at a single place over a period of time
Pioneer Species
The first organisms to appear in a newly made habitat
Climate
The average weather conditions in an area over a long period of time
Biome
A large region characterized by a specific kind of climate and certain kinds of plant and animal communities
Producer
A photosynthetic or chemosynthetic autotroph that serves as the basic food source in an ecosystem
Consumer
An organism that eats other organisms or organic matter instead of producing its own nutrients or obtaining nutrients from inorganic sources
Decomposer
An organism that feeds by breaking down organic matter from dead organisms
Trophic Level
The transfer of energy through an ecosystem
Energy Pyramid
A triangular diagram that shows an ecosystem's loss of energy, which results as energy passes through the ecosystem's food chain
Carbon Cycle
The movement of carbon from the nonliving environment into living things and back
Repiration
The exchange of oxygen and carbon dioxide between living cells and their environment
Combustion
The burning of a substance
Nitrogen Cycle
The cycling of nitrogen between organisms, soil, water, and the atmosphere
Phosphorus Cycle
The cyclic movement of phosphorus in different chemical forms from environment to organisms and then back to the environment