D) if you had available a sensitive spring scale, using a light string you could have hanged the bolt from it to measure its mass in air. then, when the bolt was dipped in water, you could have measured the new mass of the bolt. with reference to archimedes principle, would you expect the mass of the bolt in water to be greater, the same, or < the mass in air? explain your reasoning.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.

the answer is c. the lower legs are levers, and the knees are fulcrums. the ankles hold the loads.