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%
89
flagItaly
5%
2%
91%
0%
86
flagSpain
5%
2%
89%
2%
39
flagthe Netherlands
5%
3%
84%
5%
84
flagthe United Arab Emirates
6%
4%
80%
8%
46
flagthe United Kingdom
12%
6%
76%
3%
631
flagGermany
12%
5%
75%
4%
239
flagPakistan
10%
8%
75%
2%
37
flagIndia
18%
3%
71%
4%
285
flagthe United States
19%
4%
70%
3%
809
flagNorway
12%
8%
70%
8%
47
flagPoland
17%
8%
68%
5%
18591
flagRepublic of Ireland
21%
3%
67%
7%
56
flagAustralia
13%
5%
66%
11%
36
flagFrance
18%
9%
64%
5%
54
flagCanada
20%
8%
64%
6%
45
flagUkraine
23%
10%
57%
5%
38
flagUnknown
28%
8%
54%
9%
662
flagRussia
5%
11%
54%
25%
35
flagthe Philippines
33%
0%
52%
11%
36

Gender

men67%
women71%
to protect from frost
17%
17%
to protect from birds
8%
5%
to protect from acid rains
67%
71%
to protect from graffiti makers
6%
4%

Details

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