What is the overall reaction order of the following reaction?
Rate = k[A]^2[B]^2

fire could start, buildings collapsing, and ash falling from the sky.

explanation:

this is because the buildings or plants could catch on fire and the buildings would most likely collapse. lastly ash would fall because all the burning would cause ash to fall from the sky.

hope this .

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation:

answer; talc and gypsum;