Indians- Healthy and Unhealthy Ecosystems

A creature that is captured and eaten is ____.

• the prey

• a consumer

In a healthy environment, the number of ____

• predators and prey are balanced.

• prey is greater than predators.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

Why do scientists study the ecosystem of Isle Royale?

• Nothing can enter or leave it.

• The animals have plenty to eat.

If the number of moose on Isle Royale decreases.

• The number of wolves decreases.

• The amount of fir trees decreases.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

_____can cause an environment to be unhealthy.

• Too many of one type of organism

• Too few of one type of organism

• All the above

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

A lot of algae growing in a pond could be an example of

• a healthy environment.

• an unhealthy environment.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Which of the following nonliving parts of an ecosystem can change the living parts?

• increase in insects

• change in weather

Tags

NGSS.MS-LS2-4

The rise of ticks in Isle Royale caused the amount of

• moose to decrease and mount of wolves to decrease.

• moose to increase and the amount o wolves to decrease.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-2

In all ecosystems, _______

• all parts affect each other.

• the needs of all species are met.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Algea--->tadpole--->turtle--->heron. In thismodel food chain which ones are predators?

• tadpole turtle heron

• tadpole, algae, turtle

Tags

NGSS.MS-LS2-3