Since 1998, Harvard University wraps marble statues on its campus with waterproof covers every winter. Why?

to protect from frost
to protect from birds
to protect from acid rains
to protect from graffiti makers
The eastern third of the United States is sig­nif­i­cant­ly impacted by acid rain. Acids in the rain react with the calcium com­pounds in the stones like lime­stone or marble to create gypsum, which then flakes off.

Answers distribution

to protect from frost
to protect from birds
to protect from acid rains
to protect from graffiti makers
answers
flagFinland
1%
0%
98%
0%
78
flagVietnam
4%
0%
95%
0%
24
flagSpain
3%
0%
93%
3%
32
flagItaly
5%
2%
91%
0%
67
flagthe Netherlands
8%
6%
80%
6%
50
flagGermany
12%
5%
77%
4%
210
flagthe United Arab Emirates
5%
5%
76%
11%
34
flagPakistan
9%
9%
75%
3%
33
flagthe United Kingdom
12%
8%
73%
3%
470
flagNorway
12%
4%
73%
9%
41
flagIndia
18%
4%
71%
3%
259
flagthe United States
20%
4%
69%
3%
720
flagPoland
17%
8%
68%
5%
14052
flagCanada
18%
7%
65%
7%
38
flagAustralia
14%
5%
64%
11%
34
flagFrance
19%
10%
63%
4%
47
flagUnknown
24%
9%
60%
4%
82
flagRepublic of Ireland
32%
0%
58%
8%
34
flagRussia
4%
17%
52%
26%
23
flagthe Philippines
34%
0%
51%
11%
35

Gender

men72%
women70%
to protect from frost
14%
17%
to protect from birds
8%
6%
to protect from acid rains
72%
71%
to protect from graffiti makers
5%
4%

Details

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