Which statement best explains how convection currents work in Earth's mantle? Cool, denser mantle rises, while hotter, less-dense mantle drops.

Hot, less-dense mantle rises, while cooler, denser mantle drops.

Cool, less-dense mantle rises, while hotter, denser mantle drops.

Hot, denser mantle rises, while cooler, less-dense mantle drops.

a- all cells come from pre-existing cells

what is shown in the image?

eukaryote

chloroplast

mitochondrion

submitted

the potatoes have high sugar concentrations and although these potatoes were different we could seethe effects that their sugar concentrations had in different environments. for example, the potatoes in sample a, were placed in pure water. this created a hypertonic environment and caused the potatoes to draw in water from its surroundings. we saw the opposite happen with the potatoes in sample b when placed in the sodium chloride solution. the potatoes in this case were in a hypotonic solution and therefore lost water to their surroundings.