Which of these changes MUST happen for elements to become a compound? A. elements are heated
B. a gas becomes a liquid
C. elements dissolve in water
D. chemical bonds form between atoms

We eat food, like the chicken and dumplings, for nutrients and energy. once your food is digested, what body system works to move the nutrients from your food to all the various parts of your body? a) muscular system b) excretory system c) respiratory system d) cardiovascular system