The line graph below shows the average amount of dissolved nutrients in a body of water each year from 1998 to 2003. Which human activity most
likely affected this body of water between 2000 and 2003? *
The amount of rainfall will increase.
O Rivers may be contaminated by sewage.
Light pollution in the town may decrease
O People will develop more farms in the town.
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Starch and are common polysaccharide carbohydrates found in plants. sucrose glycogen fructose cellulose

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.

Aconcentrated solution of ammonia is 14.8m and has a density of 0.899g/l. what is the concentration of ammonia in this solution in weight percent (%w/w)?