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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%
69%
3%
5%
53
flagGermany
20%
68%
3%
5%
530
flagCanada
18%
68%
10%
1%
58
flagPakistan
21%
68%
5%
5%
19
flagBelarus
10%
67%
15%
6%
73
flagthe United States
18%
66%
7%
5%
491
flagPoland
24%
65%
4%
2%
13739
flagRepublic of Ireland
25%
65%
5%
2%
35
flagthe United Kingdom
26%
64%
2%
4%
190
flagIndia
19%
63%
8%
4%
299
flagUkraine
15%
62%
13%
7%
387
flagRussia
9%
59%
17%
9%
373
flagthe Philippines
21%
59%
8%
5%
37
flagGreece
37%
55%
3%
3%
27
flagKazakhstan
13%
51%
22%
8%
68
flagKG
25%
42%
17%
10%
28

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

refraction of light in ice crystals
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refraction of light in water drops
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In which layer of the atmosphere the aurora is created?

In the Troposphere
In the Stratosphere
In the mesosphere
In the Thermosphere

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volcanic dusts
sulphuric acid
detergent vapors
small droplets or ice crystals

The Australian Gibson Desert is named after Alfred Gibson. Who was he?

a man who got lost in the desert
the first president of Australia
the explorer that first crossed Australia
a famous Australian poet