U2-L2 Resource Availability in Ecosystems

What do humans, hummingbirds, and earthworms have in common according to the text?

• They all have different basic needs.

• They all have the same basic needs.

• They all live in the same environment.

• They all eat the same food.

What types of resources do organisms need?

• Living and nonliving

• Expensive and cheap

• Large and small

• Old and new

Tags

NGSS.MS-LS2-1

Where do organisms get the resources they need?

• From the ecosystem

• From other species

• From only abiotic factors

• From only biotic factors

Tags

NGSS.MS-LS2-1

What does the growth of individuals and populations depend on?

• Resource availability

• Time of day

• Weather conditions

• Color of the sky

Tags

NGSS.MS-LS2-1

NGSS.MS-LS1-5

What does the growth of a population depend on?

• The color of the organisms

• The availability of resources

• The size of the ecosystem

• The speed of the wind

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS1-5

What happens when organisms in an ecosystem have an abundance of resources?

• The population will decrease

• The population will stay the same

• The population will likely increase

• The organisms will change color

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What happens to organisms under conditions of scarce resources?

• All organisms thrive and grow.

• Not all organisms can get the resources they need.

• Resources become unlimited.

• Populations grow rapidly.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-LS1-5

What is a possible consequence of very scarce resources?

• All individuals survive.

• Populations grow larger.

• Some individuals may not survive.

• Resources become abundant.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

How can a change in the amount of resources affect a population?

• The population size remains constant.

• The population may become larger or smaller.

• The population always becomes larger.

• The population always becomes smaller.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

How does resource availability influence populations?

• It affects the growth and survival of individuals and the sizes of populations.

• It has no effect on populations.

• It only affects plant life.

• It only influences the weather.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4