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3.1 and 3.2

TermDefinition
Biosphere Part of Earth in which life exists including land, water, and air or atmosphere
Species A group of similar organisms that can breed and produce fertile offspring
Population Group of individuals of the same species that live in the same area
Community Assemblage of different populations that live together in a defined area
Ecology Scientific study of interactions among organisms and between organisms and their environment
Ecosystem All the organisms that live in a place, together with their nonliving environment
Biome A group of ecosystems that share similar climates and typical organisms
Biotic Factor Any living part of the environment with which an organism might interact
Abiotic Factor Physical, or nonliving, factor that shapes an ecosystem
Autotroph Organism that is able to capture energy from sunlight or chemicals and use it to produce its own food from inorganic compounds; also called a producer
Primary Producer First producer of energy-rich compounds that are later used by other organisms
Photosynthesis Process used by plants and other autotrophs to capture light energy and use it to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches
Chemosynthesis Process in which chemical energy is used to produce carbohydrates
Heterotroph Organism that obtains food by consuming other living things; also called a consumer
Consumer Organism that relies on other organisms for its energy and food supply; also called a heterotroph
Carnivore Organism that obtains energy by eating animals
Herbivore Organism that obtains energy by eating only plants
Scavenger Animal that consumes the carcasses of other animals
Omnivore Organism that obtains energy by eating both plants and animals
Decomposer Organism that breaks down and obtains energy from dead organic matter
Detritivore Organism that feeds on plant and animal remains and other dead matter
Created by: prathapaj17
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