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Science Homework

Unit 7 Vocabulary
An organism that breaks down wastes and dead organisms
Atoms important to living things get recycled back to the environment over and over again
A carnivore that feeds on the bodies of dead organisms
The amount of biological or living diversity per unit area. It includes the concepts of species diversity, habitat diversity and genetic diversity.
A key for the identification of organisms based on a series of choices between alternative characters
Diagram that shows the feeding relationships between organisms in an ecosystem.
A mixture of various decaying organic substances, as dead leaves or manure, used for fertilizing soil
The total mass of living matter in a given unit area
A small living plant or animal seen only with a microscope; a microbe
An animal that eats only plants
A series of steps in which organisms transfer energy by eating and being eaten
A breaking down or rotting
Anything that has mass and takes up space
Assignment of objects or people to categories on the basis of shared characteristics.
A consumer that eats only animals.
An organism that feeds directly on other organisms in order to survive; live-feeders such as herbivores and carnivores
A consumer that eats both plants and animals
The ability to keep in existence or maintain. A sustainable ecosystem is one that can be maintained
A diagram that shows the amount of energy that moves from one feeding level to another in a food web.
A group of ecosystems that share similar climates and typical organisms
An organism that eats other organisms
An organism that can make its own food.
An organism that is killed and eaten by another organism