Two glasses showing difference between dirty and clean water representing purification and cleanliness concept
Schlüsselwörter
water,
clean,
dirty,
glasses,
comparison,
purity,
cleanliness,
concept,
hygiene,
filtration,
washing,
clear,
polluted,
liquid,
clean water,
difference,
contrast,
transparency,
purification,
fresh,
environmental,
contamination,
pure,
drink,
filtered,
fresh water
Deutsch
