Which statement correctly describes the differences between positive and negative acceleration?
1. Positive acceleration describes a change in speed; negative acceleration describes no change in speed.
2. Positive acceleration describes no change in speed; negative acceleration describes a change in speed.
3. Positive acceleration describes an increase in speed; negative acceleration describes a decrease in speed.
4 Positive acceleration describes a decrease in speed; negative acceleration describes an increase in speed.

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.

answer///terminator or twilight zone;