can someone pls help me answer both of these (its ok if u only do one). ILL GIVE A BRANIEST TO WHOEVER CAN GET IT RIGHT. thank you! :)

When someone eats food

Year  1936,  lehman predicted that the earths 'inner core' is solid. she observed that the seismic signals during her study were bent and did not pass through instead bouncing back. later it was confirmed that the earth's inner core was solid made up of nickel-iron and had a molten outer core.

Ansa new gas is observed in the form of bubbles;

Do you still need with this