Why did the krill not migrate as deeply after a snowfall event on feb 15th?

A.) because many of the krill were killed by the sudden cold

B.) the snowfall event reduced the salinity of the water and affected the krill ability to sense depth

C.) krill use light cues to know how far down to migrate. The snowfall on the sea ice reduced the light intensity

D.) the water became colder and because krill are ectothermic, they could not swim as far

Answer rating: 100% (QA)

Option C is right because their vertica... View the full answer