How can deep density-driven currents affect Earth’s climate?

The answer is down

Explanation:

The deep density ocean currents aslo have a strong effect on the Earth's climate the water in the North Atlantic Ocean the water is cold and salty this colder salt water sinks because of its greater density then it flows through Southward deep in the ocean

I think this answer may help you .

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus