Ecosystems Unit Review

With this food chain, grass -> mouse -> snake -> hawk, if the mice population decreases, what happens to the grass population ?

• it increases

• it decreases

• it stays the sam

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

With this food chain, grass -> mouse -> snake -> hawk, if the mice population decreases, what happens to the hawk population ?

• it increases

• it decreases

• it stays the same

• it is undeterminable

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

With this food chain, grass -> mouse -> snake -> hawk, if the mice population decreases, what happens to the snake population ?

• it increases

• it decreases

• it stays the same

• it is undeterminable

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

The elk population declined a lot last year, what could have caused that decline?

• Decrease in mountain lions

• increase in native grasses

• forest fires

• decrease in hunting pressure

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Where does the energy in an ecosystem begin?

• heat from earth's core

• the oceans

• the wind

• the sun

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

When mistletoe steals nutrients from a spruce tree, this is the interaction known as

• commensalism

• parasitism

• mutualism

• predator/prey

Which is NOT an example of predator/prey in Scott county's ecosystem?

• A red-tailed hawk eating a squirrel

• A robin eating a worm

• A horse eating grass

• A Gardner snake eating a mouse

A bird building a nest in a tree is an example of which interaction?

• commensalism

• parasitism

• mutualism

• Competition

When birds and pollinating insects get nectar from plants, this interaction is known as

• commensalism

• parasitism

• mutualism

• competition

Tags

NGSS.MS-LS2-2

Hawks and snakes both eat mice. What do we call this interaction in our ecosystem?

• commensalism

• parasitism

• mutualism

• competition

Tags

NGSS.MS-LS2-2