(Q).
Q: What mineral that occurs in bones helps combat osteoporosis? Choices: - magnesium - iron - potassium - calcium A:
(A).
calcium

(Q).
Q: Over time, deposited sediments may harden into what? Choices: - coral - fossils - deltas - rocks A:
(A).
rocks

(Q).
Q: What do we call the full range of electromagnetic waves? Choices: - electromagnetic scale - molecular spectrum - mechanical spectrum - electromagnetic spectrum A:
(A).
electromagnetic spectrum