I do not understand this answer

Kelllyyy

can someone help? I don't see a distinction between both levels of oxygen

Allariak

Which question?

Kelllyyy

hello!

preptest 1 section 3 question 11

cat_person

This is one I think it helps to visualize. There is a cycle of water evaporating and returning to the ocean. This evaporated water has more O-16 in it, leaving O-18 remaining. The stimulus suggests this process is halted so that the evaporated water, which has more O-16 in it, is trapped in ice and doesn't return to the ocean. So if the O-16 isn't returning what can we expect will happen to the ocean? It will have more O-18.

This analogy isn't perfect, but I sort of thought of a bathtub. If I fill the bathtub with water and bath salts it will be say 50% bath salts and 50% water. But if the water evaporates (and gets trapped somewhere - this is where the analogy falls apart), the tub will have a lot more salt in it than water.