What happens to the temperature as you travel deeper into earth ?

Can someone me with questions 12 and 13 plz.

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Explain that newton first law,second law and third law of motion?