Now if dna molecules are broken down into individual atoms, which of the following groups of elements will be found? a. boron, chlorine, helium b. phosphorus, carbon, oxygen c. nitrogen, sodium, potassium d. zinc, magnesium, calcium

List two limitations of natural selection

20. in humans, freckles are dominant to no freckles. trey has no freckles and his wife anna grace has freckles, but her dad doesn't. they want to know what percentage of their kids would look like trey. show a punnett square to support your answer.

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this