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%
79
flagVietnam
3%
0%
96%
0%
27
flagSpain
3%
0%
93%
3%
33
flagItaly
5%
2%
92%
0%
75
flagCzech Republic
3%
7%
85%
3%
28
flagthe Netherlands
6%
5%
83%
5%
60
flagthe United Arab Emirates
5%
5%
80%
10%
40
flagGermany
12%
5%
77%
4%
214
flagPakistan
8%
8%
76%
2%
34
flagthe United Kingdom
11%
7%
75%
3%
536
flagNorway
12%
4%
73%
9%
41
flagIndia
18%
4%
71%
3%
269
flagthe United States
19%
4%
70%
3%
762
flagPoland
16%
7%
69%
4%
15232
flagFrance
18%
10%
65%
4%
49
flagRepublic of Ireland
26%
0%
65%
7%
41
flagAustralia
14%
5%
65%
11%
35
flagUnknown
23%
7%
63%
4%
121
flagCanada
21%
7%
63%
7%
41
flagthe Philippines
34%
0%
51%
11%
35

Gender

men73%
women71%
to protect from frost
13%
17%
to protect from birds
7%
6%
to protect from acid rains
73%
71%
to protect from graffiti makers
5%
4%

Details

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