Unit 3 Lesson 1 Ecology Introduction

In a desert ecosystem, sand is an example of a(n)______________ factor.

• biotic

• abiotic

• ecosystem

• community

A cactus is an example of a(n) ________________factor.

• biotic

• abiotic

• habitat

• niche

Populations of sharks, along with shells and water are included in an ocean ____________________.

• niche

• community

• habitat

• ecosystem

Tags

NGSS.MS-LS2-2

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NGSS.MS-LS2-4

A population is ____________________________.

• a group of different species living in the same area.

• a group of individuals of the same species living in separate areas.

• a group of different species living in separate areas.

• a group of individuals of the same species living in the same areas.

What determines where a population can live?

• whether its needs are met by the biotic factors in the habitat

• whether its needs are met by the abiotic factors in the habitat

• whether its needs are met by the abiotic and biotic factors in the habitat

• whether its needs are met by the other populations in the habitat

Tags

NGSS.MS-LS2-1

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Which is an abiotic factor in this ecosystem?

• fish

• rocks

• snails

• plants

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A niche is an animal's job in the ecosystem.

• true

• false

Organisms depend on, but do not compete with each other in an ecosystem.

• true

• false

An ecosystem relies on both predator and prey to survive.

• true

• false

Tags

NGSS.MS-LS2-2

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An increase in predators won't affect the population of prey.

• True

• False

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NGSS.MS-LS2-2

NGSS.MS-LS2-4