You may have to enlarge it but here you go!
<h2>The answer is:</h2>
Expansion and cracking
<h2>Explanation:</h2>
Whenever water freezes, it is expanded about 9 percent. Since the water in moist concrete freezes it producing pressure in the pores of the concrete. The collective effect of freeze-thaw cycles and disruption of aggregate can eventually cause expansion and cracking, scaling, and crumbling of the concrete that is formed from moist.
Answer:
The first one, "Human Impact on the Galapogos islands", the solutions it provides wont only help the islands, but help everywhere, and that there are much safer ways
Explanation:
I can maybe answer it if you give me more details
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