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How doesdrinking dirty water affects our health?
Drinking dirty or unhygienic water leads to water-borne diseases which are caused due to pathogenic microorganisms.
The pathogenic microorganisms and their toxins cause diseases like cholera, diarrhea, typhoid, amebiasis, hepatitis, gastroenteritis, giardiasis, campylobacteriosis, scabies, and worm infections.
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- <p>When a <b>sportsman</b> runs, he often gets <b>muscle cramps</b>. Give reason.</p>
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- Solve the following pairs of linear equations: (i) \( p x+q y=p-q \)$q x-p y=p+q$(ii) \( a x+b y=c \)$b x+a y=1+c$,b>(iii) \( \frac{x}{a}-\frac{y}{b}=0 \)$a x+b y=a^{2}+b^{2}$(iv) \( (a-b) x+(a+b) y=a^{2}-2 a b-b^{2} \)$(a+b)(x+y)=a^{2}+b^{2}$(v) \( 152 x-378 y=-74 \)$-378 x+152 y=-604$.
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- If $a = xy^{p-1}, b = xy^{q-1}$ and $c = xy^{r-1}$, prove that $a^{q-r} b^{r-p} c^{p-q} = 1$.
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