Francesco reid disproved the idea of spontaneous generation though an experiment

Aneuron is stimulated with an electric pulse. the action potential is detected at a point 3.70 cm down the axon 0.0052 s later.when the action potential is detected 7.20 cm from the point of stimulation, the time required is 0.0063 s. what is the speed of the electric pulse along the axon? (why are two measurements needed instead of only one? )

If the frequency of the p allele is .63 in the population then what is the frequency of the q allele?

Of seawater increases with decrease in the temperature. therefore, the cold water sinks to the deeper layers at the bottom