How do zombie stars relate to cosmic events and how do they relate to matter

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.

50 points! need answer asap. what type of organic compound contains the following functional group? (2 points)