Help with hw?

Question

I need help! (im not askin you to do my hw if you could give me an answer and why it is the way it is that would be great)
they are multiple choice... even answering one would be helpful

1-Hot springs on the ocean floor near the mid ocean ridges provide evidence that
a) climate change has melted huge glaciers
b) marine fossils have been uplifted to high elevations
c) meteor craters and found beneath the oceans
d) convection currents exist in the asthenosphere

2- Evidence of subduction exists at the boundary between the
a) african and south american plates
b) australian and antarctic plates
c) pacific and anarctic plates
d) nazca and south american plates

Answer 1

1) So there aren't any glaciers on the ocean floor. Fossils have nothing to do with hot springs, nor do meteor craters. What does convection mean? Heat driven circulation.

2) Look up those plate boundaries and see. Subduction leads to volcanism and mountains chains and lots of earthquakes.