Answer:
a toxic gas, liquid, or solid that emits poisonous vapors and is intended to destroy, harm, or impair people by inhalation or touch (as in chemical warfare).
Explanation:
and no i did not copy and paste that i put my own words in to it
so you can copy it with it being copyright :)
Advantages:
-you can save money
- less pollution
"background radiation" because if looked at right it can show u how old it is and since the big bang caused and enormous amount of light to come off it left a lot of radiator behind.
hope this is the correct answer.
tbh i haven't studied much about this so i had a little help
-harley
