Which of the following does not affect pollution levels in the great barrier reef ? tourism offshore drilling land-based industries overfishing

The correct answer is option B that is, offshore drilling.  

Offshore drilling refers to a mechanical procedure where a wellbore is drilled underneath the seabed. It is usually conducted in order to explore for and subsequently extract petroleum that lies in the formations of rock underneath the seabed.  

Most usually the term is applied to illustrate drilling activities on the continental shelf, though the term can also be used to drilling in inshore waters, lakes, and inland seas.  

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )

six grader is what i am ssorry