Why are constellations seen in the winter sky different from those seen in the summer sky?

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.

What weather system might be occurring if the pressure gradient decreases and fish harvests in peru are weaker than normal

Which two nations are doing the most to combat their environmental issues?