The main responsibility of the endocrine system is to regulate the body's growth and development, so I think your answer would be "create growth spurts in teen boys"
Hope this helps!
5. The person may say mean things to you through text messaging. That's cyberbullying. Or they can walk up to your house and hurt you physically or mentally.
6. I would advise Lin to tell a trusted adult ASAP and wait for instructions on how to handle it or tell them no and carry on with your day. Whichever makes you feel safest.
7. If you use the methods given, you can keep yourself safe online and at home.
Hope this helps!
It’s true because it kills bacteria
The next time he goes surfing, he will get tired a lot faster and will run out of breath a lot faster. He will also feel a lot more tired quicker than he used to.
