I believe it would be Heat Radiation
It would be puberty or secondary sexual characteristics
According to some research it is estimated that about 20% of americans of the age of 12 are infected with the human papilloma virus.
Hope it helped,
Happy homework/ study/ exam!
Answer:
The energy an object had due to its motion. What factors affect an objects kinetic energy and potential energy? The kinetic energy of an object depends on both its mass and its speed. Kinetic energy increased as mass and speed are increased.
Genetics, Medical problems, eating habits etc