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Ecosystems Week 1

Ecosystem A community and the abiotic parts of its environment
Autotroph Any organism that can create its own food from inorganic materials
Heterotroph An organism that cannot create its own energy and must instead rely on consuming nutrients from other organisms
Producers An organism that makes its own food
Primary Consumers Organisms that eat plants
Secondary Consumers Organisms that eat the primary consumers and or may eat plants
Decomposers A type of consumer that gets its food by breaking down animal wastes and remains of dead plants and animals
Herbivores An animal that consumes only plants
Carnivores An animal that eats only other animals
Omnivores An animal that eats plants as well as other animals
Population Organisms of the same species living together in the same environment
Community The populations living in the same environment at the same time
Population Density Is a measure of how many organisms live in that area
Limiting Factor An environmental factor that causes a population to decrease
Food Chain A model that shows one set of feeding relationships among living things
Food Web A model that shows many different feeding relationships among living things
Predator An animal that feeds on other living animals
Prey The animals predators eat
Organism Any individual living thing
Succession An ecological change
Energy Pyramid A model that shows the available amount of energy in each trophic layer in an ecosystem
Competition It is what animals do to survive, they fight for their food
Mutualism The symbiotic relationship that benefits both organisms involved
Symbiosis Interaction between two organisms in close physical association
Coexistence To live at the same time
Cooperation To work together to do something
Succession Primary Regions in which soil is in capable of sustaining life
Succession Secondary Areas where communities previously existed been removed
Taiga A biome where winters are very cold and long and the dominant plants are conifers
Tundra Extremely cold climate located near the North and South Poles and on the tops of mountains; receives very little precipitation and has no trees
Deciduous Forest A biome in which the dominant plants are broad-leaved trees that shed their leaves each fall
Grasslands A biome where the dominant plants are grasses
Tropical Rain Forests A forest that is humid and rainy for much of a year
Deserts An area that gets little precipitation and has very little vegetation
Ocean A large body of salt water that covers most of Earth
Created by: Adrienne7412