Most imperative environmental concerns are Cultural eutrophication pertaining to industrialization and urbanization which lead to proliferation of weeds in aquatic environs disturbing these ecosystems. Alarming increase in CO₂, CH₄, CFC’s, N₂O and water vapour in the atmosphere cause enhanced greenhouse effect, among all these CO₂ is accountable for 55-60 % of  total enhanced effect. Phyto- and Nutrient sequestration via plants helps storage of atmospheric CO₂ in the vegetation to get rid of  contaminants. Carbon and nutrient sequestration can be braided together for sustainable development goals. The chapters  adopt the hierarchy as follows: significance of quality environs, quantification and bio-monitoring of culprit contaminants, the issues relevant to global warming and accelerated eutrophication and their ecological impacts followed by various sequestration technologies.