Question

question 3 (1 point)
plankton are organisms that float. why is a copepod, which can swim and propel itself through the water, classified as plankton?
it was classified as a plankton before it was known that copepods are swimmers.
it has a swim bladder that keeps it from sinking, so it is a floater.
it spends part of its life floating and part swimming, so it is classified as plankton because of the floating part.
it lives at the surface of the ocean where plankton live.
because of its small size, it cannot swim very fast or very far, so its location is determined by currents.

Explanation:

Plankton are defined by their inability to swim against currents. Copepods, despite being able to swim, are small. Their small size means they cannot swim fast or far enough to counteract ocean currents. So their position in the water is mainly determined by currents, which fits the plankton definition.

Answer:

Because of its small size, it cannot swim very fast or very far, so its location is determined by currents.