A. one-third
Because th height is directly proportional to the potential energy. So, when its height is reduced one - third (from 60m to 20m), then its potential energy will also be reduced to one-third.
<span>The most common type is simple columnar epithelial cells. These cells help the stomach resist degradation by the lumen during digestion. In addition, these cells secrete substances like mucous, HCl, and pepsinogen. All these secretions are necessary for proper digestion to take place.</span>
Providing the instructions for the traits of an organism
Answer:
alanine, arginine, glutamic acid, glycine, and proline—may play a role in bone health, principally through improved production of insulin and insulin‐like growth factor 1 and the synthesis of collagen and muscle protein
Explanation: