How much coal would have to be burned to release the same amount of energy as one kg of Uranium that undergoes nuclear fission?

Keeping in mind the life cycle of bacteriophages, consider the following problem: during the reproductive cycle of a temperate bacteriophage, the viral dna inserts into the bacterial chromosome where the resultant prophage behaves much like a trojan horse. it can remain quiescent, or it can become lytic and initiate a burst of progeny viruses. several operons maintain the prophage state by interacting with a repressor that keeps the lytic cycle in check. insults (ultraviolet light, for example) to the bacterial cell lead to a partial breakdown of the repressor, which in turn causes the production of enzymes involved in the lytic cycle. as stated in this simple form, would you consider this system of regulation to be operating under positive or negative control?

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?