Because of thermohailine and other currents,
a. the oceans of the world exist as distinctly different bodies of water
b. the oceans of the world slowly mix, and are really one ocean
c. all of the oceans in the world have the same salinity
d. the temperatures of the oceans would become equal

Viruses are different from bacteria in that they can remain dormant on non-living surfaces they can be found just about anywhere they can infect just about every form of life

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction.

Can ground tissue do photosynthesis