Which of the following does not contribute to the formation of the Mid-Atlantic Ridge?

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat