First to answer gets brainless and 10 !
in dna, what base pairs with adenine?

The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.

Increasing thermal energy of any substance correlates with increasing entropy and kinetic energy of the molecules allowing them to move further away because of which they can change from one state to another that is solid to liquid to gas when enough kinetic energy is obtained by the particles within such as ice metling to water to boil to form gas.