Author Question: ________ is an odorless and colorless gas, a product of the combustion of fossil fuels and burning ... (Read 160 times)

anshika · **on:** Jul 1, 2018

________ is an odorless and colorless gas, a product of the combustion of fossil fuels and burning wood. It is a leading cause of accidental poisoning in the U.S.

a. Radon
b. Carbon monoxide (CO)
c. Nitrogen dioxide
d. Sulfur dioxide

Question 2

A(n) _______________ is the subsystem of ecology that emphasizes the relationship between organisms and their environment.

a. Ecosystem
b. Carbon footprint
c. Biology
d. Socio-psychology