Of the compounds dissolved in ocean water, which is most needed by organisms that live there?

Which two molecules do green plants use to make glucose? o a. nitrogen and water o b. hydrogen and oxygen o c. carbon dioxide and water o d. methane and iron oxide

Q: a pair of homologous chromosomesa) always has the same genes and the same allows b)always has the same genes c)always has the same alleles d)never has the same genes

The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these