_____ says that energy must flow from hot regions to cooler regions either by conduction, convection, or radiation.
A) The law of energy transport
B) The law of conservation of energy
C) The theory of energy equilibrium
D) The theory of special relativity
Question 2
A__________is a small nebula that varies irregularly in brightness, evidently associated with star formation.
A) Herbig-Haro object
B) brown dwarf
C) Bok globule
D) T Tauri star