Answer:
a. Valid
b. Invalid
c. Valid
Explanation:
Follow me and Mark me brainliest please
You said it's free response and all we had to do was answer so here's me doing the bare minimum. Lol.
Answer:
b
Explanation:
because humans are the reason. They cut down trees and uses more machines oil and gasses by which they create a gas global warming.
Tell me why i got this question got it right and now won’t remember but i’ll get back at you when i remember