in order to determine the rate of dna synthesis in various mammalian tissues, the administration of which of the following labeled substances would be most specific in labeling dna?

When coal has reached it hardest, darkest form, it is called select one: 0 a. sub-bituminous b. lignite c. bituminous d. antrhacite next page

Plz will mark! the diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Restless tectonic plates move (shift) between one and fifteen centimeters per year month day minute