D. Parasitism , the roundworm benefits from the relationship, but the puppy is harmed
27*9=243 if one mole is equal to 27 grams times that by 9
Voltage is known to be used as a requirement for stimulating an axon. The axon conducts electrical signals away from the nerve cell. The main function of the axons is that it is specifically used to transmit information, in a form of electrical impulse, to the other parts of the body.
