Which scenario ensures that Earth’s global temperature is maintained?

The energy that flows into the Earth system is less than the energy that flows out of the Earth system.
The energy that flows into the Earth system is equal to the energy that flows out of the Earth system.
The energy that flows into the Earth system is greater than the energy that flows out of the Earth system.

You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices