high school science course

Echoes can be useful or a nuisance. In a concert hall, echoes can ruin a performance if the walls and ceiling are not properly designed. If the walls are too hard, or too flat, they make good reflecting surfaces for the sound waves. Echoes can be used to give vital information. A sonar (Sonar stan..

Evolution Should not be Equated with Progress - All of the changes, diversifications, and extinctions that happened over the course of life's history are the patterns of overall evolution. Evolution of life has been taking place for about 3.8 billion years of time. When we view macroevolu..

Water is a unique and remarkable compound, essential to all forms of life. Human beings and the flora and fauna cannot survive without water on this planet. A large amount of life on this planet is aquatic based i.e., can only survive in water. It is the most abundant substance after air in the ea..

Course of 4 subcutaneous infections of anthrax vaccine is advice..

Every organism whether plant or animal is unique in itself. There is a wide diversity in the flora (plants) and fauna (animals) in the world. The diversity we see today is the result of 3.5 billion years of organic evolution. During the course of this evolution several species vanished fr..

Wash the wound with carbolic soap, and clean water without delay soon after the bite. Apply an antiseptic and consult the doctor for anti rabies vaccine. Pet dogs or cats should be immunized by getting them vaccinated with anti-rabies vaccine A rabid dog can be easily identified because it ..

Coal is formed in nature by the 'carbonisation' of wood. Conversion of wood to coal under the influence of high temperature, high pressure, and in the absence of air is termed carbonisatio..

Here the aim is to increase crop production. High yielding crops should be developed for this purpos..

Metals have high density and are very heavy. Iridium and osmium have the highest densities where as lithium has the lowest densit..

The installation and maintenance of an OTEC power plant is very high and efficient commercial exploitation is difficul..