Read the following group of sentences numbered 1, 2, 3, 4, 5, 6. Rearrange the remaining sentences in proper order to form a meaningful paragraph.

(1) One pivotal ecological niche that serves as a formidable bulwark against pollution is the wetland.

(2) The conservation of wetlands is imperative, as it stands as a cornerstone in our collective eforts to abate pollution and perpetuate an equilibrium in environmental sustainability.

(3) Wetlands assume the mantle of nature’s eminent purifers, adeptly sieving water of noxious contaminants, while concurrently acting as a reservoir for excess precipitation, thus ameliorating the peril of inundations.

(4) Pollution, a substantial environmental predicament, exerts deleterious efects on the ecological triad encompassing the atmosphere, hydrosphere, and lithosphere.

(5) The pivotal role wetlands play in ameliorating water quality assumes heightened importance in view of the pivotal role of pristine water sources in human sustenance, agriculture, and multifarious industrial processes.

(6) They underpin rich and multifarious ecosystems, engendering an optimal habitat for diverse fora and fauna, which, in turn, contributes to ecological robustness.