Which type of molecule makes up the double layer of a cell membrane?

Strands of genetic material floating in the nucleus are referred to as

Select the correct answer. which of the following statements is a scientific claim? a. the early solar system had large amounts of water; so, the oldest objects in the solar system should also be abundant in water. b. the mass of the universe is much greater than current models predict; it is not possible to explain this inconsistency. c. planet earth is abundant in water, but there is no way to scientifically determine from where earth's water originated. d. earth is shaped like a sphere even if not all of the scientific observations related to its shape support this idea.

Index fossils are fossils of organisms that question 6 options: lived over a short period of time are not easily recognized are not widely distributed geographically are scarce