Answer:
<h2>Don't know....</h2>
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A smile! It's great to see different smiles from everywhere in the world and it's joyous all around to see positivity, and everyone having the same basis of expression no matter where they're from. :) Hope this helps!
Before Exercise is the answer
<span>In this century, major earthquakes in the United States have damaged or destroyed numerous buildings, bridges, and other structures. By monitoring how structures respond to earthquakes and applying the knowledge gained, scientists and engineers are improving the ability of structures to survive major earthquakes. Many lives and millions of dollars have already been saved by this ongoing research.</span>
