Which of the following is a region with steep undersea mountains and deep valleys?
1 continental margin
2 ocean ridge
3 ocean trench
I'm pretty sure it's option 3, but i'm not positive. help?
Also -
Which of the following currents has great impact on reshaping the shoreline?
1 longshore current
2 flood current
3 ebb current
I also think this is option 3, but does anyone know if im right or wrong?
1 continental margin
2 ocean ridge
3 ocean trench
I'm pretty sure it's option 3, but i'm not positive. help?

Also -
Which of the following currents has great impact on reshaping the shoreline?
1 longshore current
2 flood current
3 ebb current
I also think this is option 3, but does anyone know if im right or wrong?
