Question

Which is one factor that internally influences the onset of puberty?

exposure to toxins
nutrition
hormone levels
social stressors

Answer 1

Hormone levels

Step-by-step explanation:

All the other options are outside influences. Nutrition depends on outside or inside but the answer is definetly hormone levels. When a teenager acts up a lot of time people say "It's just hormones."

Answer 2

Hormone Levels

Explanation

The onset of puberty is influenced internally by hormone levels.