We need blood because it carries oxygen and helps us sustain life. The organ that pushes blood through the body is the heart.
Normal polarity
Explanation:
Earth's magnetic field used to be twice as strong 1.5 billion years ago as it is today and Earth's temperature other than what the geologists see from the 'normal' pattern. It has been noticed that some volcanic rocks were magnetized in opposite direction to the direction of the local Earth's field. It is clear that the Earth has experienced the normal polarity 1.5 years ago but at that time, the Earth's polarity was poorly understood.
He is credited with the discovery of Nucleic Acids.
It is heated up to get rid of any killing germs that can harm you. Cows or any milk giving animal don’t always give bacteria free milk.
