Rust forms when oxygenreacts with chemicals in rocks, and that is often the case
Hmm, I will come back to this one just to help. :)
For the future, Put the right subject please, The answer is to protect us from harmful UV rays, Which include UVA, UVB, And UBC.
Answer:
the glass contains air bubbles that expands and contracts as the glass is heated or froze. when they expand they may cause the glass to break or even explode
Answer:
12 m/s
Explanation:
divide distance over time
72/6 = 12