Select all that apply. dna's long chains of paired nucleotides are made up of
a. acids
b. nitrogenous bases
c. phosphates
d. sugars

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.

What type of specimens where you able to see under each of the microscopes in the microscope activity

How do accessory pigments chlorophyll?