Unit 6 Claim 3 Ecosystems and Interdepedence incomplete

Carrying capacity is best defined as

• The maximum population size of a species that a specific environment can sustainably support over the long term, given the available resources.

• The total number of individual organisms that are born within a specific ecosystem during a single calendar year or breeding season.

• The maximum speed at which a population grows when there are no limiting factors, such as predators or disease, present.

• The physical weight of all biological matter, including plants and animals, that an ecosystem produces in one year.

• The largest number of different species that can coexist within a single habitat without causing an extinction event.

Biotic Factors

• Living Factors

• Non-Living Factors

• Both living and Non-living Factors

• Neither living and Non-living Factors

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Abiotic Factors

• Living Factors

• Non-Living Factors

• Both living and Non-living Factors

• Neither living and Non-living Factors

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Examples of Abiotic Factors (choose all that apply)

• Water

• Nitrogen and Oxygen Levels

• Bacteria and fungi in area

• Temperature

• Predators/ carnivores

Examples of biotic Factors (choose all that apply)

• Water

• Vegetation and plants

• Bacteria and fungi in area

• Temperature

• Predators/ carnivores

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1. Which of the following best defines a "trophic interaction"?

• Any interaction where two species live in close physical contact.

• B. An interaction involving the transfer of energy and matter through consumption

• A relationship where one species provides habitat for another without being eaten.

• D. Competition between two species for the same nesting site.

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Which of these is an example of a "non-trophic" interaction?

• A sea otter eating a sea urchin.

• A crab finding refuge from predators within a mussel bed

• A wolf hunting a deer.

• An aphid consuming sap from a host plant

In a coastal ecosystem, kelp provides a physical structure that serves as a nursery for young fish. This specific role of kelp is considered:

• A trophic interaction because the fish are part of the food web

• A non-trophic interaction because it involves habitat provision rather than consumption

• A trophic cascade.

• Intraspecific competition.

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Why are non-trophic interactions, like "ecosystem engineering," important to food webs?

• They are the only way energy enters an ecosystem.

• They can modify the physical environment, creating or destroying habitats for other species

• hey always result in the death of one of the interacting species.

• • They only occur between species of the same trophic level.

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What is the classic definition of a "trophic cascade"?

• The movement of water through different levels of a forest.

• The progression of indirect effects by predators across successively lower trophic levels

• A linear food chain that only has two levels.

• The process of primary succession after a volcanic eruption

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