Answer:
A. Both describe ways a solid can change.
I don't know about 14, but 15 is (4), because a liquid draws in heat to turn into a gas. 16 is (2), because to turn into a cold solid, something has to release heat.
Answer:
When you walk your dog, you are using energy from the sunlight to power the activity. Explain. The energy you use is transferred from glucose, which got it directly from sunlight.
Explanation:
C. The mass number is the amount of Protons and electrons there are combined, so 200 - 80 is 120.
It is A since the tails are hydrophobic.
