Any difference between individuals of the same species is called variation

traits

mutation

natural selection

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? )

What are the two main phases of a cell cycle

To sciences do not agree on which type of grocery bag is better for the environment what is most likely to come out come out of the disagreement