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
2%
0%
97%
0%
46
flagSpain
4%
0%
92%
4%
25
flagItaly
7%
3%
89%
0%
56
flagCzech Republic
6%
6%
81%
6%
16
flagthe Netherlands
12%
3%
75%
9%
32
flagPakistan
10%
7%
75%
3%
28
flagGermany
16%
4%
74%
4%
143
flagIndia
17%
4%
72%
3%
222
flagNorway
12%
5%
71%
10%
39
flagthe United Kingdom
14%
8%
70%
3%
355
flagthe United States
20%
4%
68%
3%
629
flagPoland
18%
8%
66%
5%
11541
flagCanada
20%
5%
64%
8%
34
flagAustralia
12%
6%
64%
12%
31
flagSweden
11%
17%
64%
5%
17
flagRepublic of Ireland
35%
0%
53%
10%
28
flagthe Philippines
34%
0%
50%
12%
32
flagFrance
28%
17%
46%
3%
28
flagMalaysia
37%
6%
43%
6%
16
flagRussia
6%
20%
40%
33%
15

Gender

men71%
women68%
to protect from frost
14%
19%
to protect from birds
8%
6%
to protect from acid rains
71%
69%
to protect from graffiti makers
5%
5%

Details

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