They produce sperm and they secrete hormones (testosterone)
Buddy hicks
well hes fat no life and he talks bad about people
Answer:
The official definition for cardiorespiratory endurance is "Cardiorespiratory fitness refers to the ability of the circulatory and respiratory systems to supply oxygen to skeletal muscles during sustained physical activity."
Based on that, the answer is A.
*<u><em>Just for citation purposes, the definition is from Wikipedia.</em></u>
Answer:
Irregular, short, long, and flat
Explanation:
