Day: September 5, 2021

A virus is a tiny submicroscopic viral agent that duplicates only within the living cells of a living organism. Like a bacterium or a virus, viruses affect all living cell types, from plants and animals to microorganisms, such as bacteria and archaeans. There are over 100 different types of viruses in the human body; most are harmless, however, there are a few that can cause severe illness. Most viruses are copyists – they replicate themselves. This is called replicate virus or host virus. Most viruses produce two types of genetic […]

Earth is the fourth planet in the solar system and only incidentally the only heavenly body known to host and support life. Only a fraction of the Earth’s surface (about 2.5%) is covered with land, consisting mainly of islands and continental shelves. About 66% of Earth is covered with oceans, and about the same percentage (66%) is covered with atmosphere. The remaining portion of the planet is made up of watery oceans, lakes, ice caps, etc. The Earth obtains sufficient heat from its orbit to be very cold, and an […]