I believe the correct answer from the choices listed above is the first option. Sanitation techniques and water conservation are inversely related. Therefore, i<span>mproved sanitation techniques reduce water pollution, which promotes water conservation. Hope this answers the question.</span>
Mutualism is a relationship between two species in which both species benefit. Certain species of bacteria in your intestines form a mutualistic relationship with you.
The answer is (A) as <span> increasing risk of lung cancer is from increasing levels of exposure to outdoor air pollution and </span>particulate matter
