A model that uses arrows to show the many possible paths in which matter and energy can pass through an ecosystem.

• Food chain

• Food web

• Energy Pyramid

• Succession Map

Tags

NGSS.MS-LS2-3

Does this food chain exist within this food web?

Grass > Grasshopper > Mouse > Snake > Mountain Lion

• Yes.

• No

  Mountain lions don't eat Snakes

• No

  Mice don't eat Grasshoppers

• No

  Snakes don't eat Mice

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

All food chains begin with a ____________.

• primary consumer

• secondary consumer

• producer

• decomposer

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Bacteria, molds, and mushrooms are known as __________ because they break down the remains of dead organisms.

• decomposers

• consumers

• producers

• scavengers

The diagram shows how energy can move through an ecosystem.

Which organism would complete the diagram?

• Tree

• Mushroom

• Eagle

• Snake

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Use the global food web shown to determine whether the following organisms are producers or consumers.

Select all the producers.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

A fish eats a smaller fish in a stream. Table 1 shows organisms that live within this stream habitat and their diets.

Reorder the following so that energy flows from Left to Right:

1 → 2 → 3 → 4

• Sun

• Invertebrates

• Algae

• Fish

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Use the information in the table to complete the food web.

(Match the organisms with the correct letter in the image)

• D

• Shrub

• B

• Hawk

• A

• Jerboa

• E

• Lizard

• C

• Mushroom

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

Fill in the blanks to describe how energy enters and moves through an ecosystem.

All energy in an ecosystem comes from the ​ (a)   and is absorbed by the ​ (b)   . Then the energy moves from the producers to the ​ (c)   . Eventually, when the plants and animals die, the energy moves from all the ​ (d)   to the ​ (e)   .

• sun
• producers
• consumers
• organisms
• decomposers

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3