Are caused by temperature and density differences. a. deep b. longshore c. tsunami d. surface

Your answer to your Question is ...A: deep

These currents move water masses through the deep ocean—taking nutrients, oxygen, and heat with them. Occasional events also trigger serious currents.

cardiovascular system

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1. b.

2. d.

3. a.

5. d.

6. c.

these are the only ones that i know, i hope this , and good luck.