Organism

A living thing that has the ability to act or function independently

Producer

an organism that makes its own food (plants)

Consumer

organisms that obtain food by eating other organisms

Scavenger

an animal that eats only dead organisms

Decomposer

an organism that gets energy by breaking down the remains of dead organisms or animal wastes and consuming or absorbing the nutrients

Food Chain

the path of food from one living thing to another

Food Web

The pattern of overlapping food chains in an ecosystem

Biotic

living organisms

Abiotic

non-living things in an ecosystem

Energy Pyramid

Shows the amount of energy that moves from one trophic feeding level to another in a food web

Interdependence

All organisms interact with other organisms in their surroundings and with the nonliving portion of their environment. Ecologists refer to this quality as....

Biome

A group of ecosystems classified by climate and plant life

Tundra

Biome that surrounds the north and south poles; treeless land with long summer days and short periods of winter sunlight, beneath the topsoil is a layer of permafrost.

Rain Forest

warm, wet ecosystem with millions of species of animals, birds, insects and plants. It is known as the most diverse biome of the world.

Desert

An extremely dry area with little water and few plants. Animals are nocturnal.

Deciduous Forest

a forest biome with many kinds of trees that lose their leaves each autumn after changing colors. It has the richest and most fertile soil.

Coniferous Forest

a type of forest characterized by cone-bearing, needle-leaved trees that can survive in a colder climate (Taiga)

Savannah

open grassland with scattered trees- tall grasses as found in Africa

Prairie

a large, level area of grassland with few or no trees- short grasses.

Ocean

A large body of salt water

Fresh Water Biome

Includes ponds,lakes,streams,and rivers.

Symbiosis

relationship in which two species live closely together

Mutualism

a relationship between two species in which both species benefit

Parasitism

the relation between two organisms in which one benefits and the other is harmed or damaged

Commensalism

A relationship between two species in which one species benefits and the other is neither helped nor harmed

Prey

an organism that is killed and eaten by another organism

Predator

an animal that hunts and eats other animals

herbivore

an animal that eats only plants

carnivore

consumers that eat only animals

omnivore

eats plants and animals

trophic

Each step in a food chain or food web

population

A group of individuals of the same species that live in the same area.

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