Living Environment Regents Ecology

Humans have an effect on ecosystems when they use native grasslands or forested areas for farming or urban use. One negative effect of these changes on the ecosystem is that there will be

• Less biodiversity

• More homes

• Successful economic growth

• Increased food production

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Based on this information, which ecosystem is likely to be the most stable?

• A

• B

• C

• D

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NGSS.MS-LS2-1

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NGSS.MS-LS2-4

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The organisms represented by X are

• Decomposes

• Producers

• Carnivores

• Scavengers

Order from smallest level of organization to largest

• Biosphere - all livable areas of the earth

• Ecosystem - living populations + the non-living materials (water, sunlight, gases, temp., etc.)

• Individual - one gray squirrel

• Population - all the gray squirrels in an area

• Community - squirrels, oak trees, beetles, deer, slugs, etc. in an area

Tags

Ecology

What is the significance of genetic variation in the process of evolution?

• It decreases the survival rate of a species.

• It ensures that all members of a species are identical.

• It provides a basis for natural selection to act upon.

• It prevents species from adapting to new environments.

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NGSS.MS-LS4-4

How does biodiversity contribute to the resilience of an ecosystem?

• By ensuring that all organisms have the same role, increasing efficiency.

• By reducing the number of species, making it easier to manage.

• By providing a variety of organisms that can fulfill roles if conditions change.

• By increasing competition, which weakens the ecosystem.

Tags

NGSS.MS-LS2-4

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Label each level of the energy pyramid with the appropriate organism

a

b

c

d

Frog

Snake

Grass

Grasshopper

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NGSS.MS-LS2-3

Drag the terms to the appropriate spot

a

b

Pioneer species

Climax species

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Match the following terms and definitions:

• struggling for limited resouces

• Ecology

• What a role an organism has

• Habitat

• study of organisms and the environment

• Niche

• Where and organsim lives

• Competition

Tags

NGSS.MS-LS2-5

Match the following terms with their definition;

• non-living

• community

• living

• ecosystem

• the living & non-living in the same area

• Biotic

• group of the same species

• Abiotic

• all the populations in an area

• population

Tags

Ecology