The answer is Twice a year
Answer:
muscular system help to protect our body system.
It also protect our body system from direct contact of germs.
The elements of effective communication are the following
1. Approach
2. Develop
3. Clarify
4. Style
5. Correct
Good communication can help us reduce stress and bad emotions. If the communication is bad it would worry us giving us stress that could cause strains in our body.