Answer :

FIFTY YEARS AGO THE CARE TAKEN FOR PLANTS,ANIMALS,WATERBODIES IS BETTER THAN TODAY.
                                                                           PLZ MARK IT BEST                
NABIHA
fifty years ago the care for plants were taken in botanical garden and animals in there natural habitat and in the early years they was no pollution and no dust so the water bodies doesnt require care 

hope this answer is the best one 

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