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Biology 3.1. 3.2

Ecology is the scientific study of interactions of organisms with one another and with the physical and chemical environment.
Biosphere is the layer of the planet Earth where life exists.
Species is often defined as a group of individuals that actually or potentially interbreed in nature.
Population an assemblage of individuals that belong to the same species and live in the same area.
Community an assemblage of different populations that live together in an area.
Ecosystem includes all the organisms that live in a particular place, together with their physical environment.
Biotic factor is any living part of an environment.
Abiotic factor is any nonliving part of an environment.
Autotrophs or Primary producers are organisms that can produce their own food by capture energy from sunlight or chemicals.
Photosynthesis the process in which autotrophs capture light energy and use it to convert carbon dioxide and water into oxygen and sugar.
Chemosynthesis the process in which autotrophs use chemical energy to produce carbohydrates.
Heterotrophs organisms that rely on other organisms for their energy and food. (know as consumers)
Herbivores obtain energy by eating only plants (cow).
Carnivores eat only animals (snake).
Omnivores eat both plants and animals (humans).
Detritivores feed on dead matter (earthworms).
Decomposers break down organic matter (fungi).
Scavengers consume the carcasses of other animals (vultures).
Created by: linngu2