Slice the pollution words

Exercise and reference answers

Does not match the category

1. Isobar
2. Ledger
3. Piston
4. Sonnet

Matches the category

1. Scrubber
2. Eutrophic
3. Polyblend
4. Chipko
5. Dobson

Instructions

Slice only the pollution and conservation words. Spare the others.

Explanation