Answer:
source of energy but c too
Answer:
Hurdles
Explanation:
because Hurdles are the difficulties not fitness test
Other exercises that can help improve cardiorespiratory fitness include:
1. Running
2. Power walking
3. Swimming
4. Dancing
5. Jump rope
6.high-intensity sports, such as basketball and soccer.
i hope that is the answer you were looking for.
Answer:
C. Calcium and phosphorus
Hope this helps!
The answer is Digestive system :)