Question 1
What causes ocean currents?
◦ winds
◦ density differences in the oceans
◦ temperature differences in the oceans
◦ unequal heating of the earth driving winds
◦ none of the above
Question 2
What causes seasons?
◦ the elliptical orbit of the earth
◦ differences in the amount of daylight
◦ seasonal changes in the angle of the sun above the horizon
◦ the changing tilt angle of the earth
◦ none of the above