If a solid substance is added to a liquid, the solid may dissolve forming a solution. Liquids and gases may…
Gases in the atmosphere are held in an envelope around the earth by gravity. The atmosphere is 80 km thick…
A Scientific measurement is a result of a scientific process or experiment, usually expressed in numbers or standard units, that you obtain by measuring something. The…
A flowering plant are those plants which have roots, stems, leaves and whose reproductive structures are flowers. The roots of a plant…
Vascular tissue is composed of xylem and the phloem. Xylem, which is the material you think of as wood, conducts…
The water cycle is the natural cycle of evaporation of water and subsequent condensation and precipitation as rain and snow, which assure…
Forests can be referred to as groups of trees and other plants in a large densely wooded area. The two…
A clean house is important for the health and well-being of your entire family. First of all, a dirty house…
Zambia instituted the Environmental Protection and Pollution Control Act in 1990. The Environmental Council of Zambia (ECZ) was then established…
Pollution can be defined as the introduction by man into the environment of substances that can adversely affect the health…
Erosion may mean the wearing or washing away of something. Some of the forces which make soil can also erode…
Soil fertility is defined as the ability of the soil to produce and sustain high crop yields indefinitely. In other…