What Is Vaccine? A vaccine is a biological substance designed to protect the human body from bacterial and viral infection. Vaccines are also called immunizations because they take advantage of your natural immune system to prevent infectious diseases. To understand how the vaccine works you…Read more
Introduction Water is fundamental to the life of the living organisms on the planet. Water is vital for all plant, animal, and human life on earth. Drinking water does not just quench your thirst but it is essential to keep our body healthy and function…Read more
