What do we call a molecule that has a ratio of two hydrogen atoms for every one atom of carbon and oxygen

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

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

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.