The answer is B and that is the same reason that everything stays on the Earth because it has very strong gravity.
Answer:
sheep A had the same DNA and sheep B and C did not provid any of the DNA
Cratering, Erosion, Volcanoes and Weathering
They're attached to the plasma membrane.
(it's at the midpoint of the cell.)

They are further classified into: fish, amphibians, birds, reptiles and mammals.
I hope I've helped : )