Which fat is most likely a solid at room temperature? one that is saturated one that is unsaturated one with double bonds one that contains no hydrogen

When water freezes, it . contracts expands

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system