What is the difference between a mono, di, and poly sacchharide

I hope this helps you out

Explanation: Monosaccharides contain one sugar unit such as glucose, galactose, fructose, etc. ... Polysaccharides contain many sugar units in long polymer chains of many repeating units. The most common sugar unit is glucose. Common poly saccharides are starch, glycogen, and cellulose.

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.