Answer:
1) ironing a shirt 2) writing on surfaces 3) working of an eraser
Answer: The first one
Explanation: I think it's the first one because it says what is the "least" gravitational potential energy story between the prairie dog and Earth that said resting in its borrow is using less energy
Roughly 13.8 billion years old according to science
kinetic energy is Movement energy
think of it like the Xbox Kinect
The answer would be a speed
