Either number 1 or number 3.
Bahahaha I don't even know.
sorry
Answer:
The gravitational pull of the moon as it orbits earth
Plant cells have a cell wall and cell membrane but animal cell have only a cell membrane.
Answer: is accomplished by DNA polymerase.
Explanation: DNA polymerase is an enzyme that catalyzes the synthesis of a complementary strand of a DNA molecule during replication. The double stranded DNA helix is first unwind by the enzyme known as helicase giving rise to two DNA strands which serve as templates for replication. DNA polymerase then binds to a primer, a short nucleotide sequence and catalyzes the attachment of nucleotides to the primer to form a growing strand that is complementary to the parent DNA.
He observed 15 different finch species that originated as one ancestral bird. all differing in body shape, beak size, and mating habbits