Is the "hidden" part of the water cycle because it is below earth's surface.
a. groundwater
b. caves
c. swamps
d. steam

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?

Why did the first fleet take the shorter route along the entire west coast of africa?

Mexico city is an example of how humans alter their environment because it was a. one of the world’s largest cities b. built on drained and filled lake beds c. built after conquest by the spanish d. once the capital of the aztec empire