The theory that the earth revolved around the sun was first proposed by which ancient greek astronomer?
a. eratosthenes
c. aristarchus
b. aristotle
d. hipparchus

Which statement explains what upwelling causes? a. upwelling causes tides to rise and fall. b. upwelling causes changes in the direction of currents. c. upwelling causes nutrients, minerals, and tiny organisms to rise. d. upwelling causes currents in the pacific ocean to change direction. i think the answer is c.

Why is the indus river so important to the people of pakistan?

The ratio of the measures of the three angles in a triangle is 14: 15: 11 find the measures of the angles