In a lab, scientists grew several generations of offspring of a plant using the method shown. what conclusion can you make about the offspring?

Plzz hurry im being timed during times of vigorous physical activity, muscles require a constant supply of oxygen. how does the body respond to these needs? a. breathing rate and heart rate both decrease. b. breathing rate and heart rate both increase. c. heart rate decreases, but breathing rate remains stable. d. breathing rate increases, but heart rate remains stable.

Nucleic acid certain protein cell membranes certain carbohydrates

How can you tell the difference between rough er from smooth er?