if you are conducting a monohybrid cross of tall (dominat) and dwarf (recessive) plants, the recessive trait in the F1 plant

answer; ///(b) it is composed of four protein chains and four heme groups;

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%

i think the answer is a.keratin is the pigment responsible for skin color.

a. 35°c

b. 25°c

c. 10°c

d. 40°c