physical features ( social science)

(a) Dissolving of sugar in waterWhen crystalline sugar is dissolved in water, it seems to disappear completely, and not even a very powerful microscope can show us the molecules of sugar in water. The solution obtained is uniformly sweet. By evaporating the water the sugar can be recovered in a cry..

According to Mendel, the genotype i.e., the combination of genes or the genetic constitution is made of certain structures called factors. The factors controlled the inheritance of all traits. These factors are present in pairs. The factors are now called genes. Thus the physical basis o..

Physical Properties of Metals..

When the shape, size, appearance or state, of a substance is altered, but its chemical composition remains same a physical change of matter takes place. No new substance is formed. It is usually a change, which is reversible, that is, by reversing the process, the original substance can b..

Phylum Chordata is characterized by three unique features, at least during the early stages of their developmen..

Comparative morphology involves the study of the external features of organisms. There are three types of evidences that comparative morphology reveals. They ar..

According to the dynamic particle model all states of matter are made up of tiny particles and matter as a result is an aggregation of very small particles. Nevertheless, the state of aggregation of particles is different in different substances. Some characteristic features of these par..