Changes in ecosystems

The struggle between two or more organisms over food, water, space, and other resources is called?

• niche

• competition

• mimicry

• camouflage

Tags

NGSS.MS-LS2-2

Anything that controls the growth and survival of a population is called?

• hibernation

• nocturnal

• mimicry

• limited factor

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

NGSS.MS-LS4-4

Which of these are not an invasive species?

• tiger

• gypsy moth

• zebra mussel

• locust

Which of these are an example of competition in an ecosystem?

• The gypsy moth eating all of the oak tree leaves.

• A whale with a barnacle living on it.

• Two deer fighting over a mate.

Which of these are not a limiting factor?

• temperature

• space

• metals

• food supply

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

When an animal sleeps through the winter, to protect itself from the cold this is called?

• nocturnal

• hibernation

• locomotion

• migration

Tags

NGSS.MS-LS2-1

When an organism hides from its predators by blending in this is called?

• mimicry

• camouflage

• hibernation

• gills

Tags

NGSS.MS-LS4-4

A fish uses these to get oxygen underwater?

• quills

• heart

• lungs

• gills

The spruce fir moss is an endangered species that lives in the moss under fir trees. The tree keeps the moss from getting too dry from the sun or too wet in the rain. Which of these is most likely the reason why the spruce-fir moss is endangered?

• Large amounts of fir trees were destroyed

• The number of spider predators increased.

• The deer population increased.

• Moss began to grow on other trees.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

How does a grizzly bear's claws most likely help it to survive?

• Moves him faster.

• keeps it warm

• keeps it cool

• catch food