How is a theory different from a law?

The population of bacteria in a petri dish doubles every 40 seconds. the population of the bacteria is initially 400 organisms. what unit is most appropriate for the time at which the number of bacteria is 300? hour bacteria per hour second bacteria per second

Pl which diagram illustrates prophase?

Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?