Ecosystems review

What will most likely happen to the squirrel population in an area if the trees are removed?

• The squirrel population in the area will not change.

• The squirrel population will move to another area.

• The squirrel population will increase because of an increase in predators.

• The squirrel population will decrease because of a decrease in predators.

Scientists have found a way to remove the toxin from the river. What effect would this have on the berry bush population?

• The berry bush population would increase because there would be more foxes.

• The berry bush population would decrease because there would be more foxes.

• The berry bush population would increase because there would be fewer foxes.

• The berry bush population would decrease because there would be fewer foxes.

All the living things and non-living things within a given area is called a(n) ​ (a)   ​ ​ .

• ecosystem
• biosphere
• biome
• population
• community

Match the kinds of pollutions:

• air and soil pollution

• Fields are spayed with pesticides by small law-flying planes.

• water pollution

• Vehicle exhaust emissions contain carbon monoxide, hydrocarbons, and nitrogen oxides.

• air pollution

• In most cases, domestic wastewater is not treated before people dispose of it.

True or false. Bacteria is a producer in a forest ecosystem.

• True
• False

In which ecosystem do starfish live?

• Forest

• Terrestrial

• Rivers

• Ocean

Label the food chain

a

b

c

producer

secondary consumer

primary consumer

Tags

NGSS.MS-LS2-3

A ​ (a)   is how different species get ​ (b)   from other species.

• food chain
• energy
• food web
• animals
• food

Tags

NGSS.5-LS2-1

Using the table match the following animals to correct statement

• Gets energy from the grasshopper

• Frog

• Gets energy from the sun to make its own food (producer)

• Snake

• mouse and grasshopper compete for this producer

• Tree

• Gets energy from the mouse and deer

• Grass

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Look at the food web to the left. The snake is a ​ ​ (a)  

• producer
• decomposer
• herbivore
• nonliving thing
• consumer
• sun