Ecosystems 2022

A rabbit depends on various plants in an ecosystem to survive. Which would most likely happen if a drought decreased the plant population?

• The rabbit population would increase

• The rabbit population would decrease

• The rabbit population would stay the same

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Why are animals like deer, raccoons, bears, and coyotes sometimes seen in neighborhoods?

• because it is easier to find food

• because they can escape predators

• because their habitats are increasing

• because their habitats are decreasing

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The diagram below is a simple grassland food chain.

grass------mouse------- snake

If a predator of the snake were introduced to the ecosystem, which would most likely happen?

• The grass population would increase

• The snake population would increase

• The mouse population would increase

• The mouse population would decrease

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which is an example of a terrestrial organism relying on an aquatic organism for food?

• An eagle eating a fish to survive

• Birds eating worms to survive

• Fish eating seaweed to survive

• Frogs consuming flying bugs to survive

Which explains the difference between a pond and an estuary?

• A pond is very shallow and an estuary is very deep.

• A pond contains no plants and an estuary contains plants.

• A pond is affected by tides and an estuary is not affected by tides.

• A pond contains freshwater and an estuary contains fresh and salt water.

Which two ecosystems provide most of the food for the world’s population?

• ponds and lakes

• estuaries and forests

• grasslands and oceans

• salt marshes and deserts

Which characteristic would allow many fish to move from ocean to estuary?

• both ecosystems contain only freshwater

• both ecosystems contain sufficient amounts of salt

• they are both very deep and have cold temperatures

• both ecosystems have very little plant life because light cannot reach deep areas

Tags

NGSS.MS-LS2-2

Which ecosystem most likely receives the greatest amount of precipitation?

• estuary

• grassland

• rainforest

• salt marsh

Tags

NGSS.MS-ESS2-4

Which best explains how two ecosystems benefit each other?

• Oceans provide water for plants trying to survive in deserts.

• Estuaries provide a safe breeding area for ocean organisms.

• Grasslands provide food for organisms living in oceans.

• Forests provide a hiding place from fires in grasslands.

Tags

NGSS.MS-LS2-2

How are estuaries and salt marshes similar?

• They both contain only freshwater.

• They are both larger than an ocean.

• They both have a variety of vegetation.

• They are both unaffected by the changing tides.