'पारिस्थितिकी तंत्र' शब्द किसके द्वारा प्रस्तावित किया गया था?

दिशा (66-70): निम्नलिखित संख्या श्रृंखला में प्रश्न चिह्न (?) के स्थान पर क्या आना चाहिए?

4    6    14    44  ?   892

Direction : Rearrange the following five sentence (A) , (B), (C), (D) and (E) in the proper sequence to form a paragraph; then answer the question given below them.
(A) A small wooden nest box is all it has taken to rekindle all the romance of bringing sparrows and other birds back into our cities and halt them from fading into the past like a forgotten folktale.
(B) There is something wrong with a city that remains unperturbed even as its birds desert it.
(C) Thankfully, the situation is not as hopeless as it seems.
(D) Much as we try to defend the seemingly irreversible modern life of these cities, we can’t stop  our hearts from crying when we realize that our rapidly degenerating urban eco-system isn’t generous enough to let these delicate winged creatures build tiny little nests in its nooks and crannies, sit in solitude, and rear offspring.
(E) And this desertion seems to be true with most metros in India where house sparrows have almost become a thing of the past.
Which of the following should be the FOURTH sentence after rearrangement?

कैडमियम प्रदूषण के साथ जुड़ा हुआ है?

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