1.____is the measure of the ability to do work.
a. power
b.photosynthesis
c. respiration
d.energy
2. the law of conservation of energy states that energy______.
a. is created from motion.
b. can only be converted into heat
c. cannot be created nor destroyed
3. what is kinetic energy
a. energy stored within an object
b. energy an object has due to its motion
c. energy available to a stationary object
d. energy an object creates
4. which of the object below orbit the sun ?
a. asteroids
b. comets
c. all of these object orbit the sun
d. planets​