What can have a significant effect on a region's climate

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? )

The reactions that occur in the ribosome, where amino acids are combined to form proteins are anabolic or catabolic?

Describe the function of the endomembrane system? what organelles are involved?