What can a "molecular clock" provide an estimate of? A.)the time since divergence of species with a common ancestor, based on genetic differences
B.)the time since divergence of species with a common ancestor, based on radioactive isotopes
C.)the amount of genetic difference between a species and an ancestor
D.)the amount of genetic differences between two species with a common ancestor

What is the difference between how ionic and covalent bonds form

Which process of living things produces water that enters the water cycle

How do water’s relative densities as a solid and a liquid differ from that of most other substances? water’s solid and liquid forms have different densities, while most other substances have solid and liquid forms with similar densities. water’s solid and liquid forms have similar densities, while most other substances have solid and liquid forms with different densities. water’s liquid form is less dense than its solid form, while the opposite is true of most other substances. water’s solid form is less dense than its liquid form, while the opposite is true of most other substances.