Which of the following can cause an increase in density that result in a deep ocean current?
the sun heats the water’s surface.
warm water loses energy to its surroundings and cools.
a warm wind blows across cold water.
an iceberg melts, adding fresh water to ocean water.

Which best describes this behavior? it is beneficial only to the males that do not fertilize eggs. it is beneficial only to the female workers that are not fertilized. it is beneficial to each one of the individual colony members. it is beneficial to the whole species, but not to all of the individual members.