Explaining a Soil Profile - Seneca High School.
SOIL POLLUTION Definition: Soil pollution is defined as the build-up in soils of persistent toxic compounds, chemicals, salts, radioactive materials, or disease causing agents, which have adverse effects on plant growth and animal health. Soil is the thin layer of organic and inorganic materials that covers the Earth's rocky surface.
Note: the characteristic structure of a soil can be recognized best when it is dry or only slightly moist. When you are studying a soil profile to determine the grade of structure, make sure you examine a fresh profile. 7.2 Grades of soil structure. By definition, the grade of structure is the degree of aggregation, expressing the differential.
Their soil horizons or layers further describe soil series: The uppermost soil horizon is exposed at the surface and contains live plants and plant matter that hasn't decomposed yet. Deeper soil horizons (there can be several in one region's soil profile) are generally dryer and lighter in color than the uppermost layer.
Soil definition, the portion of the earth's surface consisting of disintegrated rock and humus. See more.
Soil fertility is directly influenced by pH through the solubility of many nutrients. At a pH lower than 5.5, many nutrients become very soluble and are readily leached from the soil profile.
Mollisol, one of the 12 soil orders in the U.S. Soil Taxonomy. Mollisols are characterized by a significant accumulation of humus in the surface horizon, or uppermost layer, which is almost always formed under native grass vegetation. They are highly arable soils used principally for growing grain.
Profile definition is - a representation of something in outline; especially: a human head or face represented or seen in a side view. How to use profile in a sentence. Synonym Discussion of profile.