Erosion blockers

Prevent erosion means ___________ erosion.

• hide.

• move.

• stop.

• break.

Erosion can make it hard for crops to grow.

• 
• 

One the following things is not a natural resource:

• Water.

• car

• Wind

• Sunlight

Farmers plow curved rows of fields on hill to block wind.

• 
• 

Farmers plant windbreaks to block the wind.

• 
• 

Straw Wattles prevent _________ erosion.

• Water.

• Wind.

• truck.

• trees.

A civil engineer uses the computer in his project to solve problems.

• 
• 

Choose more than one option:

Farmers plant trees as windbreaks to protect area number:

• 1

• 2

• 3

• 4