Interactions in an Ecosystem

A symbiotic relationship that involves species having to fight for something they both need or want

• competition

• predation

• commensalism

• parasitism

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symbiotic relationship in which one organisms benefits and the other organism is not affected

• invasive (non-native) species

• mutualism

• parasitism

• commensalism

symbiotic relationship in which both organisms benefit

• competition

• Mutualism

• nitrogen fixation

• energy pyramid

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Termites are tiny insects that can cause severe damage to homes and other structures that consist of wood. Termites are an example of what type of factor.

• Biotic

• Abiotic

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An angler fish has a fleshy growth on its head that gives off light. This part acts as a lure to help the angler fish catch its prey. An anglerfish is an example of which type of factor?

• Biotic

• Abiotic

Is a deer an abiotic or biotic factor?

• abiotic

• biotic

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What is the difference between the biotic and abiotic factors?

• Biotic factors are living things and abiotic factors are nonliving things.

• Biotic factors are nonliving things and abiotic factors are living things.

Which is an example of a biotic factor in the environment?

• The climate in the region

• Carnivores that consume other animals

• Amount of helium gas in the air

• Flow of water in a river

_______________ are the living factors in an environment and may include food sources and other populations.

• Community

• Competition

• Biotic factors

• Population

A community comprising all the biotic and abiotic factors in an area and all the interactions among them

• ecosystem

• population

• species

• Environmental interaction

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