Which one of these situations would have higher density water? Water at the equator

Water with a lower salt content

Lower temperature water

Water near where a river enters the ocean

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2

i wish i could but this one is weird give me abc and i can solve it.