Captain Planet Wanted to Take This Down to Zero
This page is the CodyCross answer for the clue below from African grasslands, Group 1556, Puzzle 2 (Hyenas and Wild Dogs).
Question is: Captain Planet Wanted to Take This Down to Zero
and the answer is: POLLUTION
Word Meaning:
POLLUTION — Physical contamination, now especially the contamination of the environment by harmful substances, or by disruptive levels of noise, light etc.
Definitions from Wiktionary.