The more repetition, the stronger the connections between neurons.
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:
Answer:
The digestive system fuels the cells and the excretory system rids the body of the cells’ waste.
Explanation:
Has mastered a subject and has sufficient experience
