Mention 5 changes seen in boys during adolescence. [5 MARKS]

Each point: 1 Mark

1. Increase in height and better development of muscles.
2. Broadening of shoulder.
3. The voice in boys becomes deep and hoarse.
4. Secretions from oil glands increases causing acne and pimples.
5. Increase in facial hair and body hair, axillary hair and pubic hair.