The answer would be A. troposphere
Answer:
c. a small amount
Explanation:
Trace elements (or trace metals) are minerals present in living tissues in small amounts.
Answer: Crescent
Explanation: Image result for In what phase is the moon if it is gaining light and less than half illuminated
Crescent Moons are when it's less than half illuminated, and gibbous when it's more than half. “Waxing” means that the Moon becomes more illuminated night-by-night, and the term “waning” means that it's getting less illuminated each night.
198.12 g of ammonium sulfate are required to make 0.25 L of a solution with a concentration of 6M.
Extrusive rock because it takes longer to cool, making the crystal size larger