345 final review

Soil colloids are influenced by

• soil

• ph

• climate

• tree roots

What soil order is associated with high silicates?

• Mollisols

• Oxisols

• Andisols

• Vertisols

What is CEC dependent on?

• air

• water

• ph

• sun

Fauna represents what?

• plants

• rocks

• soil animals

• vegetation

Which type of earthworm burrows several feet deep into the soil?

• epigeic

• endogeic

• anecic

• brecic

Soil erosion by wind occurs where in the United States?

• Mountains

• Great plains

• South

• Northeast

What is one major factor that effect erosion by water?

• Sun

• topography

• animals

• vehicles

What is one factor that affects the distance and direction of soil splash?

• slope

• sun

• vegetation

• tillage

Name on type of soil movement with both wind and water erosion

• elevation

• suspension

• transformation

• plates

What is one control practice that helps with wind erosion?

• tillage

• Strip cropping

• overgrazing

• survey