I really need help with these science questions?

Question

If you know any of these, help me out plz

1. The mixed layer is thickest at?

A)Equatorial and polar latitudes
B)Equatorial latitudes
C)Middle and polar latitudes
D)Middle latitudes

2. One cause of water mixing in the mixed layer is?

A)Swimming plankton
B)Bubbles from blacksmokers
C)Strong winds
D)Density differences

3. The straits of Gibraltar prevent polar water from entering the?

A)Atlantic ocean
B)Baltic sea
C)Indian ocean
D)Mediterrean sea

4. Diatoms are the most abundant kind of?

A)Bacteria
B)Salt
C)Phtoplankton
D)Zooplankton

Answer 1

This looks familiar....

1) Well, what is the mixed layer defined as? Once you know what it is you should be able to know where it is the thickest.

2) Again, once you define the mixed layer, you will know how it comes about.

3) Locate the Straight of Gibraltar on a map. That should help you figure this out. If not, you can look up the Straight of Gibraltar online or in an encyclopedia and that should help.

4) Look up diatom online or in an encyclopedia and it will tell you.

Learning is the pursuit of answers, not having them given to you. Haven't you ever heard "Give a man a fish, feed him for a day. Teach a man to fish and feed him for life."?