Tag: Class 10 Essay
The source of Energy A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun;in fact, at the Sun’s very …
Obtaining fresh water from icebergs The concept of obtaining fresh water from icebergs that are towed to populated areas and arid regions of the world was once treated as …
Statistics There were two widely divergent influences on the early development of statistical methods. Statistics had a mother who was dedicated to keeping orderly records of government units (states …
Coal-fired power plants The invention of the incandescent light bulb by Thomas A. Edison in 1879 created a demand for a cheap, readily available fuel with which to generate …
American black bears American black bears appear in a variety of colors despite their name. In the eastern part of their range, most of these brown, red, or even …
Cohesion tension theory Atmospheric pressure can support a column of water up to 10 meters high. But plants can move water much higher; the sequoia tree can pump water …
The Salinity of ocean waters If the salinity of ocean waters is analyzed, it is found to vary only slightly from place to place. Nevertheless, some of these small …
Topaz Topaz is a hard, transparent mineral. It is a compound of aluminum, silica, and fluorine. Gem topaz is valuable. Jewelers call this variety of the stone “precious topaz”. …
