Question

1. the creation of carbon monoxide is an effect. what is one cause?

a. the regrouping of the atoms in table salt
b. the burning of fossil fuels
c. cleaning swimming pools
d. operating a stove

Explanation:

Carbon monoxide is created when fossil fuels are burned incompletely. Regrouping atoms in table salt is a physical change. Cleaning swimming pools and operating a stove do not directly create carbon monoxide.

Answer:

B. the burning of fossil fuels