Answer.its C babe
Bc if you think back at the question it’s most likely for the mask to prevent coughs ect.
When penicillin was first developed in 1940, many doctors regarded it as a Panacea that would end all infectious diseases.
Answer: i believe the answer is lower back
Explanation:
The flexor muscles are in the front and include the abdominal muscles. These muscles enable us to flex, or bend forward, and are important in lifting and controlling the arch in the lower back. The extensor muscles are in the back. These muscles allow us to stand upright and lift objects
Answer:
1) stratitions and contractions
2)Chemical Energy
3) exercise
4)foods and nutrients
5) skeleton
6) Cardiac
7) Smooth
