Environmental changes

Lightning is an example of ________________

• Natural events

• Ecosystem

• Events made by people

In an ecosystem____________________

• Both living and nonliving things interact

• Both living and nonliving things don't interact

__________ is when small pieces of rock are carried away by water and sometimes by the wind.

• Erosion

• Flood

• Drought

Smoke and ash are caused by ........

• wind

• fire

• water

What could possibly cause a fire?

• Natural events

• People

• Both of them

Animals habitats can be destroyed by ...........

• Fire

• Plants

• Pinecones

Determine which of the following is a flood?

• 
• 
• 

One of the negative effects of fire is ___________

• Destroy animal habitats

• clear spaces for new plants

• pinecones open when fire heats them

Which of the following is a way of water changing the environment?

• Erosion

• Wind

• People

• Fire

Floods and droughts do not affect the environment.

• true

• false