The difference between extending and flexing your arm at the elbow is when you flex your arm at the elbow it tightens,when you extend your arm its takes longer to reach the potential of the flexing part.
Answer:technically everywhere
since it can grow from the ground, or fall in the form of rain, or you can genetically make some food in factory
Explanation:
Menstrual cycle is a phenomenon which occurs in primate females
I think it would be pem A. but im not hundred percent sure.