Science 4.3 Ecosystems

What are biotic factors?

• Biotic factors are the non-living components of an ecosystem.

• Biotic factors are the living components of an ecosystem, such as plants, animals, and microorganisms.

• Biotic factors are the chemical substances in an ecosystem.

• Biotic factors are the physical features of an ecosystem.

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What is an example of a living part of an ecosystem?

• A tree is a living part of a forest ecosystem.

• A rock is a non-living part of an ecosystem.

• Water is a living part of an ecosystem.

• A cloud is a living part of an ecosystem.

What is the difference between a community and an ecosystem?

• A community consists of different species living together, while an ecosystem includes both the community and the non-living environment.

• A community is a group of the same species, while an ecosystem is a single organism.

• A community includes only the non-living components of an environment, while an ecosystem includes only living organisms.

• A community is a small part of an ecosystem that only includes plants.

What is a habitat?

• A habitat is a type of animal.

• A habitat is a place where people live.

• A habitat is the natural environment where a species lives and grows.

• A habitat is a type of food chain.

How do changes in the environment affect ecosystems?

• They have no effect on ecosystems.

• They can enhance species populations and interactions.

• They can disrupt the balance of an ecosystem, affecting species populations and interactions.

• They only affect the climate, not the ecosystems.

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What is a community in an ecosystem?

• A community is all of the populations of different species that live in a specific area.

• A community is a group of individuals of the same species living in a specific area.

• A community is the physical environment where organisms live.

• A community is the sum of all the ecosystems in a region.

How do organisms interact in a food web?

• Through competition for resources

• By forming symbiotic relationships

• Through feeding relationships, where energy is transferred from one organism to another.

• By migrating to different habitats

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What is a niche?

• A type of plant that grows in wet environments.

• The role or function of an organism within its ecosystem, including its habitat, resource use, and interactions with other organisms.

• A geographical area where a species is found.

• A method of reproduction in animals.

What are abiotic factors?

• Living components of an ecosystem

• Non-living components of an ecosystem, such as water, air, soil, and sunlight.

• Factors that affect the climate of an ecosystem

• Biotic interactions within an ecosystem

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What is a population in an ecosystem?

• A group of individuals of different species living together in an area.

• A group of individuals of the same species that live in a specific area.

• A collection of abiotic factors in a specific environment.

• A random assortment of organisms in a habitat.

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