ATP in biology stands for Adenosine triphosphate. It’s an energy carrying molecule found in the cells of all living things. It captures the chemical energy obtained from the breakdown of food molecules and then it releases it to other cellular processes
Answer: At sea level and at a temperature of 0° Celsius (C), the height of the mercury column is approximately 30 inches, or 76 centimeters. This represents a pressure of approximately 14.7 psia. The 30-inch column is used as a reference standard. Atmospheric pressure does not vary uniformly with altitude.
i think they are just trying to educate us the best way they can and trust me kids can make that quite hard on them so they use tactics to scare or annoy the kids