Which of the following explains why your body may contain a carbon atom that was present george washington's body in 1776? a. carbon moves in a one-way direction through living organisms only. b. carbon moves in a one-way direction from the atmosphere and then through living organisms. c. carbon moves in a cyclic fashion through living organisms only. d. carbon moves in a cyclic fashion through the atmosphere and living organisms.

Which class of organic compounds makes up the channels and pumps that move materials from one side of the cell membrane to the other? a.) carbohydrates b.) lipids c.) proteins d.) nucleic acids

Aparent with freckles is crossed with a parent without freckles. the punnett square shows the possible genotypes and phenotypes of the offspring. which statement accurately describes the probability of phenotypes? a. the offspring are more likely to have freckles. b. the offspring are more likely to have no freckles. c. the likelihood of the offspring having freckles and not having freckles is the same. d. the likelihood of the offspring having freckles and not having freckles cannot be determined.

Drag each tile to the correct box. arrange the layers and faults from oldest to youngest.