Will give abrainlest conifers have needles and enclose their seeds in cones pods nodules sacks

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 advantages does a pedigree have over a written passage?

Archaebacteria use for movement. celia flagella pili cell walls