The bio-fuel ethanol as a solution to acid deposition is based on which of the following?
1.) Wheat Production
2.) Corn Production
3.) Cotton Production
4.) Clean Coal Production

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.

Which phrase describes the time it takes for a planet to make a complete rotation

Less developed nations have low literacy rates. true or false