help me out with this science vocab?

Question

1. Layer of the ocean throughout which wind and waves mix heat evenly

2. Ocean layer of rapid temperature change

3. Microscopic floating animals that feed on phytoplankton

4. Hot springs on the ocean floor near mid-ocean ridges

5. Microscopic floating and drifting plants

6. One-celled phytoplankton that build thick silica shells

7. Scientific study of oceans

8. Measure of dissolved solids in sea water

Answer 1

6. Foraminifera
7. Oceanography
8. Concentration

Answer 2

1. Layer of the ocean throughout which wind and waves mix heat evenly (thermocline, not sure of this one)

2. Ocean layer of rapid temperature change thermocline

3. Microscopic floating animals that feed on phytoplankton, zooplankton

4. Hot springs on the ocean floor near mid-ocean ridges, hydrothermal vents that may be black smokers

5. Microscopic floating and drifting plants algea

6. One-celled phytoplankton that build thick silica shells diatoms

7. Scientific study of oceans Oceanography

8. Measure of dissolved solids in sea water, Salinity

Answer 3

4. Black smokers, white smokers, or hydrothermal vents

5. Phytoplankton

6. Foramnifera and Diatoms

Answer 4

2. thermocline
4. hyrdothermic vents
7. oceanography (no kidding)
8. maybe... parts per million???