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Ecosystems

Organism A living thing
Resources Food, shelter, water things from its environment that needs to live
Habitat An environment that provides things a specific organism needs to grow live and reproduce
Biotic factors The parts of a habit that were once alive and that interact with an organism
Abiotic factor Non living parts of an organisms habitat
Population All the members of one’s species
Community All the different populations that live in the same area
Ecosystem The study of how organisms live in an area with non living things
Population Density The number of individuals that are in an area of a specific size
Limiting factor An environmental factor that causes a population to stop growing or decrease in size.
Carrying capacity The largest population that an area can support
Producer An organism that can make its own food
A consumer Obtains energy by feeding on other organisms
Decomposer Break down biotic wastes and dead organisms
Food web Consists of many overlapping food chains in an ecosystem
Food chain A series in which an organism eats another organism and obtains energy and nutrients
Energy pyramid Shows the amount of energy that moves from one feeding level to another in a food web.
Photosynthesis The set of chemical reactions plants use to turn light, water, and nutrients into oxygen and energy, in the form of sugars
Symbiosis Any relationship between in which two species live closely together.
Commensalism A relationship in which both species benefit
Mutualism Which is a relationship in which both species benefit
Parasitism A relationship that involves one organism living with, on, or inside another organism harming it.
Predation One organism is the predator and the other is prey
Niche Includes how an organism obtains its food
Competition The struggle between organisms to survive as they use the same limited resources.
Chlorophyll A pigment chemical that absorbs light
Autotroph An organism that makes its own food
Heterotrophs An organism that gets it’s good from another organism
Scavenger A carnivore that feeds on the bodies of dead organisms
Carnivore Eats only animals
Herbivore Eats only plants
Omnivore Eats animals and plants
Created by: user-1979077
 

 



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