The Nature of Soil

Front

Partially decayed plant and animal matter.

Back

organic matter

Front

The exchange of gases between the soil and the atmosphere.

Back

soil aeration

Front

The living together of unlike organisms.

Back

symbiosis

Front

The space occupied by air and water.

Back

pore space

Front

The ease with which soil can be worked.

Back

tilth

Front

What resource is utilized in the form of organic matter in the soil? Options: air, carbon, temperature, water

Back

carbon

Front

Which soil component accounts for about 5 percent of the soil? Options: air, mineral matter, organic matter, water

Back

organic matter

Front

What effect do organisms have on soil?

Back

Their activities enhance drainage and improve air exchange.

Front

What four basic plant needs are provided by soil? Options: anchorage, water, nutrients, and oxygen; anchorage, water, foods, and carbon dioxide; chloroplasts, air, mineral matter, and organic matter; essential elements, warmth, oxygen, and carbon dioxide

Back

anchorage, water, nutrients, and oxygen

Front

Which of the following is considered a non-agricultural use of soil: cropland, grazing, natural resources, recreation?

Back

recreation