Indispensable
-
cannot do without/absolutely necessary/all-important
2.
Polyphonic
-
producing or making many different sounds or voices or melodies together
3.
Toxic
-
poisonous
4.
Pollutants
-
a substance that makes something (air/water/atmosphere) dirty or unsafe
5.
Genuine
-
real
6.
Landfills
-
an area where garbage is dumped
7.
Abandoned
-
given up completely/not taking care of anymore
8.
Discarded
-
thrown away
9.
Engrossed
-
having one’s attention taken totally by someone or something
10.
Carcinogen
-
cancer causing substance