2. density currents move what way?

Density currents are those currents that result from density differences. These currents are started by those currents that flow along the bottom of oceans or lakes in nature. Most density currents are formed deep in the ocean. But if we talk about direction of currents then the density currents move vertically.

lol i would say c -porductivity

question

which are human systems?

the amazon rain forest

the appalachian trail

the george washington bridge

the himalayas

the hoover dam

the north american free trade agreement