1) Which of the following is NOT a principle of Darwin’s theory of evolution by natural selection?
a) Isolated populations always produce new species.
b) Individuals compete for limited resources.
c)Individuals that are suited to the environment survive and reproduce.
d)Natural populations tend to overproduce.

2)Which pair is an example of homologous structures?
a)The traps of Venus flytraps and the pitchers of pitcher plants
b)carrots and sweet potatoes
c)White potato tubers and ginger root rhizomes
d)all of the above

How do temperature and salinity affect deepwater currents? they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water.