I believe the correct response is D. Need a living host cell to reproduce.
The answer is plankton are floaters. Plankton and nekton are both marine aquatic organisms. The main difference between the two is that plankton tend to float and be carried by water currents while nekton are organisms that swim against the current of the water. Plankton are passive swimmers while neekton are active swimmers.
Im like 98% sure its B because ultra sounds hear the frequency's of the baby in the womb
