In a dna molecule, which of the following forms a base pair with thymine?
o
a. cytosine
o
b. adenine
o
c. guanine
o
d. thymine

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’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

Organisms that successfully adapt will leave to grownone of the above