Question

It's the need of an hour to save the earth from depletion write an effective article about it to awaken the society

Answer 1

Answer:

The thinning is most pronounced in the polar regions, especially over Antarctica. Ozone depletion is a major environmental problem because it increases the amount of ultraviolet (UV) radiation that reaches Earth's surface, which increases the rate of skin cancer, eye cataracts, and genetic and immune system damage.

Answer 2

AnswEr:

$\begin{gathered}\begin{gathered}\frak{Given}\begin{cases} \sf{First\:Term\:(a)\:=\:17}\\ \sf{Last\:Term\:(L)\;=\; 350} \\ \sf{Common\: Difference\:(d)\:=\; 9}\end{cases}\end{gathered}\end{gathered}$

Given

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⎪

⎪

⎧

FirstTerm(a)=17

LastTerm(L)=350

CommonDifference(d)=9

$\:\:\:\:\;\:\;\footnotesize\bold{\underline{\underline{\sf{\red{Formula\:For\:the\: Last\:Term\:is \:-}}}}}$

FormulaFortheLastTermis−

$\dag\;\:\large{\underline{\boxed{\sf{\purple{l\:=\; a +(n -1)d}}}}}$

l=a+(n−1)d

†

$\large\bold{\underline{\sf \green{Putting\:Values-}}}$

PuttingValues−

$:\implies\sf \: 350 = 17 + (n -1)9::⟹350=17+(n−1)9:$

$\implies\sf \:\cancel\dfrac{333}{9}$= (n -1)⟹

9

333

=(n−1)

$:\implies\sf \: (n -1)$ = 37:⟹(n−1)=37:⟹(n−1)=37:⟹(n−1)=37

:

$\implies\sf \: n$ = 37 + 1:⟹n=37+1⟹n=37+1:⟹n=37+1

$:\implies\large\boxed{\sf{\purple{n\:=\;38}}}$::⟹

n=38

:

$\small\bold{\underline{\sf{\pink{Therefore\:Given\:AP\: Contains\: 38\:Terms.}}}}$

ThereforeGivenAPContains38Terms.

$\large\bold{\underline{\sf{Now\: Finding\: Sum -}}}$ NowFindingSum−

$:\implies\sf \: S_{n}$ = \dfrac{n}{2} (a +l)::⟹S

$:\implies\sf \: S_{38}$ = $\dfrac{38}{2}(17 + 350):$⟹S

$:\implies\sf \: 19 \times 367::$⟹19×367:

$:\implies\large\boxed{\sf{\purple{6973}}}$::⟹

$\small\bold{\underline{\sf{\red{Sum \:of \: the \:Terms\: of \: the \: Given\: AP\; is \: 6973.}}}}$