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What is the effect of nicotinic acid on human organism?

it is neutral
It is harmful, causes cancer
It is highly toxic, kills in 10 seconds
It is essential for functioning
Nicotinic acid, better known as niacin or vitamin B3, has nothing in common with tobacco. Chronic lack of niacin leads to pellagra, a vitamin deficiency disease.
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Answers by country

it is neutral
It is harmful, causes cancer
It is highly toxic, kills in 10 seconds
It is essential for functioning
answers
flagRussia
5%
26%
7%
60%
141
flagGreece
16%
16%
8%
60%
25
flagKazakhstan
4%
25%
12%
58%
24
flagGermany
4%
36%
4%
53%
41
flagUkraine
4%
37%
4%
52%
195
flagBelarus
10%
30%
10%
50%
30
flagPakistan
5%
30%
11%
49%
71
flagCanada
9%
39%
9%
42%
33
flagAustria
14%
21%
21%
42%
14
flagAustralia
3%
32%
18%
41%
55
flagthe United Kingdom
4%
47%
10%
36%
176
flagPoland
4%
51%
12%
30%
11108
flagNigeria
3%
43%
10%
30%
30
flagMalaysia
8%
40%
24%
28%
25
flagthe United States
6%
49%
14%
27%
451
flagRepublic of Ireland
0%
55%
20%
25%
20
flagIndia
4%
48%
20%
24%
452
flagthe Netherlands
23%
30%
23%
23%
13
flagSingapore
6%
68%
12%
12%
16
flagthe Philippines
14%
65%
11%
5%
35

Which plant is hazardous to harvest when it is wet?

cotton
grapes
tobacco
sunflower

What is the natural role of nicotine in tobacco plant?

it is poisonous to insects
it attracts bees
it is an useless by-product
it moisturizes leaves

What enema was used to treat many diseases in the 17th-19th centuries?

salt solution enema
spirits enema
liquid soap enema
tobacco smoke enema

Where does the name K2 come from?

name of Polish climber - Jerzy Kukuczka
the fact it's second in height in the world
name of the Karakoram Range
the name "King George II"