Answer:
Because people on earth may not have the correct technology.
Explanation:
Answer:
A
Explanation:
I think it is A because a dinosaurs are extinct so it wold be possible to find a dinosaur fossil in the coal mine.
B:Molecules must collide.
Why: They have to collide so the chemical bonds can break.
Protons and neutrons i think , sorry if i’m wrong.
Answer:
Gas is for example oxygen or the air we breath and liquid is water.
Explanation:
