Need help in chemistry with these 10 questions please. 80 points well be given.

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

Surface currents are caused by blank space . question 14 options: surface currents are caused by? differences in water temperature high salinity differences in density wind forces

Word equation for k+ h2o yield koh + h2