Geograghy of egypt that intensive (high yield) agriculture possible? where?

The 5th term in a series of even number that begin 3x

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.

Alow pressure system is formed when an air mass cools over a cool surface and sinks. true or false