The Number of _______________ on the Sun Varies Over an 11-Year

question 70

Multiple Choice

The number of _______________ on the Sun varies over an 11-year cycle.

• A) sunspots
• B) rays
• C) canals
• D) valleys

---

Definitions:

Androgens

A group of hormones that play a role in male traits and reproductive activity; present in both males and females.

Estrogens

A group of hormones that play a critical role in the development and regulation of the female reproductive system and secondary sexual characteristics.

Testosterone

A primary male sex hormone that plays key roles in health and development, but is also found in females in smaller amounts.

Corpus Callosum

A large band of nerve fibers connecting the two hemispheres of the brain, facilitating communication and coordination between them.