Answer:
I think the last answer D
C. Ice is less dense than water which means water condenses when it freezes allowing the ice in a lake to float on top of the water preventing the water below from freezing.
the three types of symbiosis are: mutualism, commensalism, and parasitism. Parasitism is when one is helped one is harmed, commensalism is when one is helped and one isn't bothered, and mutualism is when all organisms are benefited. Did I help?