A reaction is first order if: a) the coefficients in the chemical reaction are all 1's. b) the order with respect to one reactant is 1. c) the overall reaction order is 1. d) the reaction proceeds quickly to products.

c) the overall reaction order is 1.

Explanation:

The order of reaction is defined as the order in which the particles of the different reagents commission to produce a product. Additionally, the total order of reaction is the sum of the exponents of the concentrations in the law of the reaction rate, since the order depends on the reagent that is analyzed. The order of the reactions is determined experimentally.

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 .

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

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