What is IMPROVEMENT? A valuable addition made to property (usually real estate) or an amelioration in its condition, amounting to more than mere repairs or replacement of waste, costing labor or capital, and intended to enhance its value and utility or to adapt it for new or further purposes. Spencer v. Tobey, 22 Barb. (N.
(4) WEATHER MODIFICATION-The term `weather modification' means changing or controlling, or attempting to change or control, by artificial methods the natural development of atmospheric cloud forms or precipitation forms which occur in the troposphere. SEC.
Weathering - Physical weathering. 1  Physical weathering, also called mechanical weathering or disaggregation, is the class of processes that causes the disintegration of rocks without chemical change. The primary process in physical weathering is abrasion (the process by which clasts and other particles are reduced in size).