Why are nucleic acids not considered a nutrient? (a)only macromolecules containing nitrogen are considered nutrients. (b)only macromolecules that produce enzymes are considered nutrients. (c)they are information-storing molecules and are not used for energy storage. (d) they are structural molecules and are not used for energy storage. my guess is (d)

Are the earth's ocean floor and continents the same age geologically? why or why not?

During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.

Which areas of earth receive the most precipitation on average? a. tropics b. temperate zones c. regions near 30? n and s latitudes d. polar zones 1