Ecosystems

The part of Earth where organisms can live.

• biotic factors
• biosphere
• ecology
• biology

Tags

NGSS.MS-LS2-1

Organisms that make up the living part of an ecosystem.

• abiotic
• biotic factors
• ecology
• ecosystems

Tags

NGSS.MS-LS2-2

Nonliving things found in an ecosystem.

• factories
• factor trees
• biotic factors
• abiotic factors

Tags

NGSS.MS-LS2-3

A group of the same type of organisms living in the same place at the same time.

• threatened species
• populations
• community
• limiting factor

Tags

NGSS.MS-LS2-1

All of the populations that live in one area together

• limiting factors

• populations

• community

• speed limit

Tags

NGSS.3-LS2-1

Which is a biotic factor?

• sunlight
• air 
• bacteria
• all of the above

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which is a non-living part of an ecosystem?

• Sunlight
• Air
• Water
• All of these

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS2-3

Which is an abiotic factor that most limits the number of frogs living in a pond? 

• the color of the water 
• the number of predators 
• the temperature of the water 
• the populations of producers 

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Below is an example of a simple food chain.

Acorn → Squirrel → Fox → Mountain Lion 

What will most likely happen if squirrels are removed from the food chain?

• The fox will eat acorns
• The fox population will decrease
• The trees will produce fewer acorns.
• The mountain lion population will increase

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

When an ecosystem is affected by loss of shelter, what happens to the populations in that ecosystem?

• They can decrease or die out
• They are usually not affected
• They can readily adapt to the changes
• The populations increase

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4