09/2021Unit 1 Review

You know that wolf population size on Isle Royale, in Lake Superior, is affected by the size of moose populations on the island. Moose populations will also be affected by the populations of plants that they rely on for food. How would an increase in the populations of plants that moose feed on change wolf population size?

• Wolf population size would decrease after the increase in plant population size.

• Wolf population size would increase after plant population size increases.

• Wolf population size would increase at the same time as the increase in plant population size.

• Wolf population size would decrease at the same time as the increase in plant population size.

What would cause a decrease in the rabbit population?

• An increase in grass growing
• A decrease in caterpillars
• An increase in owls
• An increase in fox

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of these populations is most likely to decrease if the number of grasshoppers decreases?

• plants
• frog
• praying mantis
• owl

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

An example of a natural change to the ecosystem is:

• A highway built in the middle of the desert. 
• Lightening strikes and starts a fire in the forest. 
• A rancher placing too many grazers in a small area leading to overgrazing.

Tags

NGSS.MS-LS2-4

You are outside bird watching and come across these pileated woodpeckers caring for their young in a tree hole nest. You then notice another tree with small owls and ducks using the woodpeckers nest holes from last year. Which of the following claims could you make based on your observations?

• In ecosystems without pileated woodpeckers, populations of owls, bats, and some ducks decrease because of competition with pileated woodpeckers.

• In ecosystems without pileated woodpeckers, populations of owls, bats, and some ducks decrease because they have fewer nest holes to raise their young in.

• Pileated woodpeckers cannot live in ecosystems without owls, bats, or ducks that use their nest holes.

• Pileated woodpeckers do not change the ecosystems they live in.

This graph shows how the population in the United States has changed over time.

• The population has steadily decreased over time

• The population has steadily increased over time

• The population increased and then decreased

• The population decreased and then increased

Tags

NGSS.MS-ESS3-4

Which of the following is an example of an abiotic factor?

• temperature

• squid

• coral reef

• bacteria

Tags

NGSS.MS-LS2-3

competition means:

• rivalry

• vice

• communication

• inflammation

predation means:

• hunting

• preparation

• precaution

• nursing

omnivore means:

• a person from whom you are descended

• a person who eats all kinds of foods

• one who spreads rumors about another

• one of the baby boom generations in the 1950s