All organisms have dna, which differs only in the number and order of each type of nucleotide. this suggests that all organisms have
a) a common ancestor.
b) the same amount of dna.
c) the same types of proteins.
d) a common reproductive cycle.

Plz ! cattle ranchers and dairy farmers rarely allow all of their animals to reproduce instead they practice selective breeding and only encourage the reproduction of animals with specific features. which of the following cows would a dairy farm most likely choose to reproduce? a. a cow that makes a lot of milk. b. a cow that can run quickly. c. a cow with a think, soft fur. d. a cow with large, strong hooves.

To maintain asepsis when administering an injection, all parts of the syringe can be handled except the:

What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures