Which is the best explanation for a convection current in the atmosphere? Hot air expands and rises to the top of the atmosphere, while the cool air stays

Hot air expands and rides becoming cooler and denser, then falling again in a

Cold air expands and rises, becoming warmer and contracting, then falling again

in a continuous cycle.

Cold light air rises in the atmosphere, while the warmer air stays near the

ground

i wish i could with all of them i can barley see the first one so here's the answer to the first one b

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.