If it is rounded to the hundredths place, it would be 18.19 if it is rounded to the tenths place, it will be 18.2 and if it is rounded to the whole number, it will be 18.
The answer to this question is:
A. Haploid
Im pretty sure its
A. Number of Organisms
B. Amount of Matter
A million sorrys if im wrong :(
Petrochemicals include many things, I would say All of the above. Hope this helped! :)
