organism that makes its own food.

organism that obtains food by eating other organisms

consumer that only eats animals

consumer that eats both plants and animals

animal that only eats dead organisms

organism that breaks down the wastes or remains of other organisms.

way of showing how the energy from food moves through the populations of organisms in a community

way of showing how food chains are related

way of showing how energy moves through a food chain.

struggle among organisms for resources in an ecosystem

relationship in which an organism kills and eats another organism.

organism that kills and eats another organism

organism that is killed and eaten by another organism

relationship between different species living in close association with one another.

relationship between two different kinds of organisms that benefits both of them.

relationship between two different kinds of organisms in which one benefits and the other is unaffected.

relationship between two different kinds of organisms in which one organism lies on or in another organism and causes it harm.

trait that helps an organism survive in its environment.

repeated movement of water between Earth's surface and the atmosphere.

changing of a liquid into a gas.

process by which plants lose water through the stomata in their leaves.

changing of a gas into a liquid.

water that falls to Earth from the atmosphere.

repeated movement of carbon between Earth's atmosphere and organisms.

nonrenewable energy source formed from the remains of plants and animals that lived and died long ago.

process of combining nitrogen with other elements to make usable compounds.

repeated movement of nitrogen compounds between the atmosphere, the soil, and living organisms.

species of living organisms in danger of becoming extinct.

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Chapter 12

Interactions among living things

Term	Definition
producer	organism that makes its own food.
consumer	organism that obtains food by eating other organisms
herbivore	consumer that only eats plants
carnivore	consumer that only eats animals
omnivore	consumer that eats both plants and animals
scavenger	animal that only eats dead organisms
decomposer	organism that breaks down the wastes or remains of other organisms.
food chain	way of showing how the energy from food moves through the populations of organisms in a community
food web	way of showing how food chains are related
energy pyramid	way of showing how energy moves through a food chain.
competition	struggle among organisms for resources in an ecosystem
predation	relationship in which an organism kills and eats another organism.
predator	organism that kills and eats another organism
prey	organism that is killed and eaten by another organism
symbiosis	relationship between different species living in close association with one another.
mutualism	relationship between two different kinds of organisms that benefits both of them.
commensalism	relationship between two different kinds of organisms in which one benefits and the other is unaffected.
parasitism	relationship between two different kinds of organisms in which one organism lies on or in another organism and causes it harm.
host	organism a parasite feeds on.
adaptation	trait that helps an organism survive in its environment.
water cycle	repeated movement of water between Earth's surface and the atmosphere.
evaporation	changing of a liquid into a gas.
transpiration	process by which plants lose water through the stomata in their leaves.
condensation	changing of a gas into a liquid.
precipitation	water that falls to Earth from the atmosphere.
carbon cycle	repeated movement of carbon between Earth's atmosphere and organisms.
fossil fuel	nonrenewable energy source formed from the remains of plants and animals that lived and died long ago.
deforestation	excessive cutting of forests.
nitrogen fixation	process of combining nitrogen with other elements to make usable compounds.
nitrogen cycle	repeated movement of nitrogen compounds between the atmosphere, the soil, and living organisms.
endangered species	species of living organisms in danger of becoming extinct.

Created by: theduc

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