Animal Systems

Removes waste after digestion.

• excretion

• digestion

• circulation

Which organism do the owl and the weasel compete for in the food web?

• Hawk

• Spider

• Grasshopper

• Shrew

Tags

NGSS.MS-LS2-1

When a population thrives, it means that-

• the number of organisms is decreasing.

• it is growing strong and reproducing.

• the number of organisms is increasing.

• the number of organisms stays the same.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

When changes to an environment happen, animals-

• move.

• perish.

• adapt.

• all of the above

Tags

NGSS.MS-LS2-4

• Soil
• Sunlight
• Water
• Oxygen

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

When change occurs, organisms will:

• only adapt.

• adapt, migrate, or die.

• migrate or die.

Tags

NGSS.HS-LS4-4

NGSS.HS-LS4-5

Scientists are concerned about overfishing of shark populations. Sharks feed on rays and rays feed on scallops. Without sharks, rays consume all the scallop beds. This situation demonstrates that:

• humans can improve an ecosystem by removing predators.

• humans can upset an ecosystem by removing species.

• reducing the shark population increases the quantity of scallops that can be taken.

• sharks are not important for the stability of the ecosystem.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which statement best explains how natural selection occurs?

• when adaptations help an organism reproduce and survive.

• when organisms are geographically isolated.

• when an organism’s offspring grow vestigial structures.

• when characteristics from the parent organism are inherited.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Which of the following is a herbivore?

• cricket

• frog

• hawk

• shrew

How many carnivores are shown in this food web?

• 6

• 4

• 5

• 3