The earth is rotating on its axis
Hypothesis - there will be a relationship between the amount of gas per kilometer and the speed the man is going. This is because , more speed requires more gas / power.
The variables are - the amount
Of gas , and the speed in which he is going
The group that you compare the results of your experimental group(s) to
The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion. Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body. The process of digestion has three stages