Ecosystems

Which of the following describes a relationship in which one organism depends on another organism for its needs?

• A rabbit burrowing in the ground.

• A hawk catching and eating a mouse.

• A frog cooling off in the pond.

• An oak tree absorbing sunlight for food.

Which of the following would be the most likely to cause the rapid disruption (cause problems quickly of an ecosystem?

• The introduction of a new species.

• A gradual change in temperature.

• Varying rainfall from season to season.

• One kind of organism preying on another.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

The table shows the basic needs of a robin. Which environmental change would be harmful to the survival of a robin?

• Prairie dogs digging tunnels in the ground.

• Beavers building a dam to create a pond.

• Humans cleaning forests to build houses.

• Ants building large anthills in a school yard.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-ESS3-4

In any ecosystem, which of the following must be present in order to support the needs of all the animals?

• Plants are needed to transform energy from the sun into food.

• Tall cliffs or mountains are needed to provide places for shelter.

• Soft soil is needed to allow digging and burrowing.

• Wide-open spaces are needed to watch for predators.

Tags

NGSS.MS-LS2-1

A food web for a prairie ecosystem is provided. In this ecosystem, matter is transferred from-

• eagle --> squirrel --> plant seed

• sun --> plant seeds

  --> plants

• mountain lion --> eagle --> snake

• prairie grass --> deer --> mountain lion

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

All of the living and nonliving things and all of the interactions in an area creates

• an ecosystem

• an interaction

• a food web

• interdependence

Tags

NGSS.MS-LS2-2

A group of organisms that are similar to one another and can combine to produce offspring

• food web

• species

• interactions

• ecosystem

Tags

NGSS.MS-LS3-2

NGSS.MS-LS4-2

What would be a beaver's environment?

• prairie

• deep ocean

• river

What would be a blue whale's environment?

• prairie

• deep ocean

• river

What would a grasshopper's environment be?

• prairie

• deep ocean

• river

Tags

NGSS.MS-LS2-4

NGSS.MS-LS1-5