PLZ HELP.
At a hydrothermal vent, .

bacteria and other organisms die due to lack of nutrients

seawater seeps out of the ocean floor through cracks in the crust

seawater seeps into the ocean floor through cracks in the crust

B

Explanation: Seawater seeps out of the ocean floor through cracks in the crust

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds