The state of California has over 1,000 dams, many built from the 1930s to the 1970s to reduce flooding and to
create hydroelectric power. A dramatic decrease in salmon and trout populations were noted in the dammed
rivers. The state has recently begun to research dam removal to restore rivers to their original flow. Which of
the following is a possible benefit of removing some dams?
restoration of migrating fish habitats and related food web species
increased hydroelectric power output from remaining California dams
© better long-term drought prevention from reservoirs
D a decrease in flooding events downstream from where the dam is removed

How do temperature and salinity affect deepwater currents? question 15 options: 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 changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.