You stroke the ball and roll down throat
The control group would be the normal gasoline. The control group is the one that is most normally used.
B. A fish because it has a back bone, unlike the other answers.
People that can't distinguish colours or see some colours as others are called color blind. The most common colours involved are red, blue and green.
There are three types of color blindness:
Trichromacy
Anomalous trichromacy
Dichromacy
Hope it helped,
BioTeacher101
In the stomach, the enzyme pepsin has the function to break proteins into smaller units-polypeptides. Pepsin is synthesized and secreted in an inactive form- pepsinogen. Activation energy (the minimum amount of energy that is required to activate an enzyme) is achieved in the acidic medium (pH from 1 to 3). So, the activation of pepsin (conversion of pepsinogen to pepsin) is possible thanks to the cells in the stomach lining which produce hydrochloric acid (HCl), causing the stomach contents to have a low pH.
Antacids neutralize the acid made by the stomach, affecting the digestion.