Front

The largest soil particles are: clay, loam, silt, sand

Back

sand

Front

What is it called when rows of trees are planted to prevent soil erosion on level, sandy land?

Back

windbreak

Front

When rill erosion is uncontrolled, the main result is:

Back

gully erosion

Front

Soils that contain 50% solid materials and 50% pore space, with half of the pore space containing water and the other half filled with air, are considered:

Back

ideal

Front

The soil horizon with the most organic matter is the:

Back

A horizon.

Front

When Nick was trying to determine how much fertilizer to use on his fields, he asked the county agriculture agent and was told that he should:

Back

perform a nutrient analysis or soil test.

Front

When small channels form on sloping land where running water from precipitation has washed soil away, it is best called:

Back

rill erosion.

Front

The major effect of air pollution on the climate has been:

Back

the greenhouse effect.

Front

A catalytic converter on a car and a scrubber used on a smokestack:

Back

controls emissions.

Front

Small pieces of material in the air similar to dust and liquid droplets are best known as:

Back

particulate matter.