All of the following are advantages of dams except.

a. enhancing natural spawning patterns of fish
b. recreation
c. flood control
d. hydroelectric power

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

[ou.01jthe greatest speed with which any physical object moves is 300,000 km/soundsec. which of the following has a speed of 300,000 km/sec? a.light in water b.light in vacuum c.sound in air. d. sound in water

Which of the following east asian contries are a peninsula? a. china b. taiwan c. south korea d. mongolia