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Why is the ozone hole dangerous?

it speeds up the global warming
it increases UV radiation
it depletes the oxygen (O2)
it disturbs Earth's magnetic field
In the ozone layer, ozone molecules absorb UV-B and UV-C radiation - short wavelength forms of ultraviolet that can disrupt organic molecules, producing cancerous changes in living cells.
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Answers by country

it speeds up the global warming
it increases UV radiation
it depletes the oxygen (O2)
it disturbs Earth's magnetic field
answers
flagthe Netherlands
0%
94%
0%
5%
19
flagAustralia
17%
80%
0%
2%
45
flagFrance
9%
77%
13%
0%
22
flagAustria
16%
76%
3%
3%
65
flagSwitzerland
18%
70%
3%
5%
54
flagGermany
19%
69%
3%
5%
550
flagCanada
18%
68%
10%
1%
58
flagthe United States
18%
66%
7%
5%
497
flagPoland
24%
65%
4%
2%
13770
flagthe United Kingdom
26%
65%
2%
4%
195
flagBelarus
11%
65%
14%
7%
76
flagRepublic of Ireland
25%
65%
5%
2%
35
flagIndia
19%
63%
8%
4%
299
flagUkraine
15%
62%
13%
7%
390
flagRussia
9%
59%
18%
10%
377
flagthe Philippines
21%
59%
8%
5%
37
flagGreece
35%
57%
3%
3%
28
flagKazakhstan
13%
51%
22%
8%
68
flagKG
25%
42%
17%
10%
28
flagUzbekistan
20%
40%
25%
15%
20

The bright circle around the Sun seen in the picture is known as a halo. What causes it?

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