Symbiosis that is beneficial to both organisms involved.

A relationship where one organism benefits at the expense of another.

A type of interaction where both organisms are harmed.

A relationship that has no effect on either organism.

A group of different organisms or species living together in a specified habitat.

A single species living in isolation.

A collection of non-living things in an area.

A group of organisms that are all the same species.

The process of working together for a mutual benefit

A method of competing against others

A strategy for individual success

A form of isolationism

A hierarchical series of organisms each dependent on the next as a source of food.

A random collection of plants and animals in an ecosystem.

A list of all the food items consumed by a single organism.

A diagram showing the energy flow in a food web.

All of the biotic and abiotic factors within the environment

Only the living organisms in a habitat

The physical landscape of an area

The climate conditions affecting a region

A relationship between two organisms where one benefits and the other is harmed.

A relationship between two organisms where both benefit.

A relationship between two organisms where one benefits and the other is neither helped nor harmed.

A relationship between two organisms where both are harmed.

A group of the same species living in the same habitat

A collection of different species in an ecosystem

The total number of individuals in a specific area

A group of organisms that can interbreed and produce fertile offspring

Earth - The largest level within the environment

The layer of gases surrounding the planet

The region of the Earth where life exists

The part of the Earth that is covered by water

Organisms that produce their own food.

Organisms that consume other organisms for energy.

Organisms that decompose organic material.

Organisms that rely on sunlight for energy.

An organism that produces organic material.

An organism that consumes plants only.

An organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.

An organism that feeds on other animals.

A graphical model of energy flow in a community.

A representation of the food chain in an ecosystem.

A diagram showing the distribution of species in an area.

A chart illustrating the levels of biodiversity.

any living thing that can grow, respond to stimuli, use energy, is organized, and is made up of cells.

a collection of non-living materials that interact with each other.

a type of chemical reaction that occurs in living cells.

a group of cells that are identical and perform the same function.

An organism that can make its own food

An organism that consumes other organisms

An organism that decomposes organic material

An organism that relies on photosynthesis only at night

Organisms that can produce their own food using sunlight.

Organisms that cannot produce their own food and rely on other sources, mainly plant or animal matter.

Organisms that only consume plant matter.

Organisms that are capable of photosynthesis.

A large community of plants and animals that occupies a distinct region.

A small group of organisms living in isolation.

A type of climate characterized by high temperatures and low rainfall.

A collection of unrelated species in a specific area.

An organism that produces its own food through photosynthesis.

An organism that feeds on plants or other animals for energy.

An organism that decomposes organic material.

An organism that relies solely on inorganic substances for energy.

Living components of an ecosystem.

Non-living components of an ecosystem.

Components that are both living and non-living.

Only the water and air in an ecosystem.

A system of interlocking and interdependent food chains.

A linear sequence of organisms through which nutrients and energy pass as one organism eats another.

A diagram that shows the feeding relationships between organisms in an ecosystem.

A type of food chain that only includes herbivores.

Interaction between two different organisms living in close physical association, typically to the advantage of both.

A competition between two species for the same resources.

A relationship where one organism benefits at the expense of another.

A random occurrence of organisms living in the same area without interaction.