Question

Evironmental pollution affects man as much as birds and
animals. Birds are the freest denizens
of nature. They leave a place at once if it poses
any danger to their life. Thus how polluted or
unsafe a place or
region has become ,can
at once be gauged from the number of migratory
birds that have stopped visiting it
the given bargraphs clearly show that Northern India has
be come increasingly Polluted during the last
three decades. The pollution as measured during the diwali days of 1980,s
stood at 1500, which went up to 2000in 1990,s and again to 2500 in the 2000,s. change into Hindi​

Answer 1

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Answer 2

Answer:A wide variety of substances and agents are released into the atmosphere due to anthropogenic activities. Higher levels of such entities have given rise to four major environmental problems: air, light and noise pollution and global warming, all of which severely affect birds and other animals. These four issues have been overlooked, although climate change is receiving increasing attention. The four challenges often occur simultaneously and are likely to exert composite impacts. Most studies have focused on the effects of a specific problem at a particular time and have never taken into account their cumulative consequences. This review tries to address this shortcoming. It aims to evaluate the composite impacts of the problems on flying birds beyond an understanding of their individual impacts. The review initially sheds light on the individual impacts based on existing scientific literature. Composite impacts were then estimated by assigning suitable scores to the literature to convert it into empirical data. Scores were then analysed. Through this assessment, it was found that the health of birds is highly vulnerable to the composite effects of the problems. Additionally, statistical

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