The age distribution is one of the most fundamental characteristics of the populations. It is the most widely studied phenomenon by the demographers. Generally, they use the population pyramid that is the bar chart in which each of the horizontal group represents the individuals of the specific age groups. The age distribution of a … Read more
Abuse of drugs and alcohol by teens is very common and can lead to serious consequences. Nearly 70 percent of high school seniors have tried alcohol, 50 percent have taken an illegal drug and more than 20 percent have used a prescription drug for a non-medical reason. Research has found most people start misusing … Read more
Adaptive radiation is a process in the evolutionary biology, by which the organisms are rapidly diversified, from their ancestral species to the new life forms particularly due to change in the environment, which causes the availability of the new resources, and creates the new environmental niches. The process of adaptive radiation starts with the single … Read more
Covalent Network Solids Covalent solids are composed by a series or chain or network of atoms or molecules which together held by covalent bonds. An ideal individual crystal of covalent solid is hence one single huge molecule. For instance, the diamond structure is shown in part (a) of Fig. 1, which contains sp3 hybridization of … Read more
Ionic solids refers to the constituent particles which are ions. These solids are formed as a result of 3-D arrangement of anions and cations. The forces acting between anions and cations are electrostatic forces or coulomb’s forces of attraction. These forces exhibit strong nature. Eg: In NaCl compound, Na+ is called cation and Cl- as … Read more
Molecular Solids Referring to molecular solids, matters’ elementary particles are molecules. Molecules exist as they are firmly packed and arranged to give rise to the formation of molecular solid. Moreover, molecular solids are separated into 3 basic categories as per the molecules’ nature: Polar Molecular Solids Non-polar Molecular Solids Hydrogen-Bonded Molecular Solids Polar Molecular … Read more
All the living organisms generate their new offspring by the process of reproduction, which is essential for the continuation of the species and all life forms. However, reproduction is not necessary for the survival of all organisms but it is essential to ensure that they are not going to extinct shortly. Mainly there are two … Read more
Acid Rain, broadly known as acid precipitation is caused due to emissions of Sulphur dioxide or nitrogen oxides in the air. When the sulphur dioxide gets mixed with water it forms sulphuric acid and sulphurous acid which is toxic by nature. The nitrogen oxides form Nitric acid which is equally damaging. When these harmful emissions … Read more
When you glance at the influences of air, water, and soil pollution, then it becomes a need to eradicate or at least reduce the atmospheric pollution which is affecting us all. The reason for pollution is the release of waste materials and improper disposal. So, effective measures should be followed and everyone should take the … Read more
Green chemistry, also called the sustainable chemistry or environmentally friendly chemistry. Possibly, the most extensively acknowledged definition regarding green chemistry is presented by chemist John Warner and Paul Anastas, as per whom the green chemistry is “chemical products and process modeling” which lessens or eradicate the generation and use of hazardous substances. Green Chemistry indulges … Read more