Mabye you should provide an answer key or mabye make the question more accurate.
Answer:
The current world population is 7.8 billion as of January 2020.
Answer: The following is not an advantage of a constructed wetland for treating livestock wastewater:
<em>a) May facilitate mosquito breeding</em>
<em>e) Can be aesthetically pleasing</em>
It is an bionic ground to treat industrialized waste matter. It is fashioned for land restoration after excavation, or as a extenuation step for areas squandered to development .
<u><em>Therefore, the correct option in this regards are (a) and (e).</em></u>