David wants to improve the food shortage situation in his country. Which of these fields of biology should he study?

A.
pathology
B.
agriculture
C.
evolutionary biology

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? )

Any sound above what db can cause hearing loss in human beings

Which enzymes break down carbohydrates?