Answer:
The two hormones, LH and FSH, are responsible for production of testosterone in boys. Testosterone is the male sex hormone produced in the testes. Blood levels of testosterone in boys rise during puberty, and this surge of hormone levels is responsible for development of the male features: facial hair, pubic hair and muscle development.
Explanation:
There are no choices.. but maybe try exercising more!
Science and technology is co-related with health, population and environment. They are the significant means of development process. It's making the human life more comfortable and productive invention of various technology has made the treatment of health easy and reliable.
A vaccination can produce immunity to smallpox
