__ Footprint, a Person’s Environmental Impact
Puzzle 14 of Alternatives to Plastic Pack
Question is: __ Footprint, a Person’s Environmental Impact
and the answer is: CARBON
Word Meaning:
CARBON — (uncountable) The chemical element (symbol C) with an atomic number of 6. It can be found in pure form for example as graphite, a black, shiny and very soft material, or diamond, a colourless, transparent, crystalline solid and the hardest known material.
Definitions from Wiktionary.