F1 would be red because the first round is dominant-recessive the only other answer is pink.
Answer:
muscle relaxation is the correct answer.
Explanation:
Answer:
The circulatory and respiratory systems absorb oxygen from the air and transfer it to all parts of the body while absorbing carbon dioxide from the body and releasing it into the air. When a person inhales, the lungs expand and fill with fresh air.
Explanation:
Diatoms have cell walls composed of silicon dioxide.
A. silicon dioxide.