You can visit Wikipedia for information regarding water pollution..
true
Kuroshio. Kuroshio, (Japanese: “Black Current”, )also called Japan Current, strong surface oceanic current of the Pacific Ocean, the northeasterly flowing continuation of the Pacific North Equatorial Current between Luzon of the Philippines and the east coast of Japan.
Very easy to look up but it is Eurasia
True. Smog is fog combined with other pollutants like smoke than can be from automobiles or cars.
Hope this helps.