Unit 8 vocabulary

Competition

• The demand for resources, such as food, water, and shelter, in short supply in an ecosystem.

• A type of cooperation between species to share resources.

• The process by which organisms adapt to their environment over time.

• A method of resource allocation among different species.

Parasitism

• A symbiotic relationship where both organisms benefit.

• A symbiotic relationship in which one organism benefits and the other one is harmed.

• A relationship where one organism lives inside another without causing harm.

• A relationship where both organisms are harmed.

Limiting Factor

• A factor that can limit the growth of a population.

• A factor that enhances the growth of a population.

• A factor that has no effect on population growth.

• A factor that only affects the environment.

Biosphere

• All parts of the Earth where there is life.

• The layer of the atmosphere where weather occurs.

• The region of the Earth that is covered by water.

• The solid outer part of the Earth, including the crust and upper mantle.

Prey

• An organism that hunts other organisms.

• An organism that is hunted or eaten by a predator.

• An organism that competes for resources with others.

• An organism that lives symbiotically with another.

Mutualism

• A symbiotic relationship in which both organisms benefit.

• A relationship where one organism benefits and the other is harmed.

• A relationship where both organisms are harmed.

• A relationship where one organism benefits and the other is unaffected.

Symbiosis

• A close, long-term relationship between two species that usually involves an exchange of food or energy.

• A competition between two species for the same resources.

• A temporary interaction between two species that does not affect their survival.

• A relationship where one species benefits at the expense of another.

Organism

• A living being that can reproduce and grow.

• Something that has or once had all the characteristics of life.

• A non-living entity that can interact with living beings.

• A type of cell that forms tissues in multicellular organisms.

Ecosystem

• A collection of all living and nonliving things in a given area.

• A group of similar organisms that can breed and produce fertile offspring.

• The process by which plants and animals adapt to their environment.

• A system of interconnected food chains in a habitat.

Abiotic Factor

• Any living factor in an organism's environment.

• Any nonliving factor in an organism's environment, such as soil, water, temperature, and light availability.

• Factors that are only related to the climate of an area.

• Factors that include only the biological aspects of an ecosystem.