Most ocean food chains depend on phytoplankton as primary producers.
Where in the ocean do phytoplankton
live?
(1 Point)
A. throughout all ocean waters,
because phytoplankton can tolerate a
wide range of temperature and light
conditions
B. within about 200 meters of the
ocean shoreline, because
phytoplankton depend on nutrients
that wash into the water from land
C. within about 200 meters of the
ocean surface, because
phytoplankton require light to survive
D. attached to shells along the ocean
floor, because phytoplankton cannot
float