1. Describe the following processes in healthy animals: nerve conduction, the role of myelin in nerve conduction, and the role of acetylcholine in activating muscle cells, eventually leading to contraction. 2. Now, what may cause muscle weakness? Examine all the options in the pathway above that may lead to a physiological state of weakness.

stratosphere: as the altitude increases, the air temperature increases. the stratosphere has a layer of ozone, called the ozone layer. this layer absorbs most of the ultraviolet radiation from sunlight. this results in the stratosphere being warmer.

i would have a lunch. it's one big package of food, making it one food. : p

ability to mate mark me brainliest

i think the answer is gold im not entirely sure