The primary building blocks of a dna molecule are
(a) nitrogenous bases, phosphates, and ribose sugar.
(b) nitrogenous bases, phosphates, and deoxyribose sugar.
(c) phosphorous bases, nitrogen, and ribose sugar.
(d) phosphorous bases, nitrogen, and deoxyribose sugar.
(e) carbon, nitrogen, oxygen, phosphorous, and deoxyribose sugar.

The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. the ancient whale is extinct and is believed to be an ancestor of the present-day whale. what do these skulls most likely show that supports darwin’s theory of evolution? all populations can adapt and survive. only some organisms have a common ancestor. populations change slowly over time. populations rapidly become extinct.

Explain why process 2 is so important to sexual reproduction identify processes 1 and 3 state one difference between the cells produced by process 1 and cells produced by process 3

If a young male's body is just beginning the process of producing sperm, when is it likely that he would ejaculate mature, viable sperm"