Fact you don’t know #4
Why we have a black and white view at night or low light conditions ? In our eyes there are two kinds of special cells that help us to see. […]
How to revise Digestive system in an easy way?
Human digestive system includes two basic things Alimentary canal 2. Digestive glands 1 Alimentary canal : human alimentary canal is basically a pipe of varying diameter which is designed for […]
