The volcanoes on mars resemble on earth.
a. arenal volcano
b. mount vesuvius
c. mount saint helens
d. the hawaiian islands

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?

Explain the value of statistics and other data to positive economics and to normative economics

An enormous wave generated by an earthquake beneath the seafloor is known as a