Excerpt from: is grammar important? carole jenkins (10) knowing the elements of a sentence and how sentences are structured can you to get across your intended meanings in your writing and speaking. in sentence 10 the words knowing, writing, and speaking are all examples
a) gerunds.
b) infinitives.
c) participles.
d) simple subjects.

In sentence 10 the words knowing, writing, and speaking are all examples of gerunds

Explanation:

The line ten of this excerpt shows the use of gerunds as different parts of the speech, gerunds can have varied uses and they always end in "ing" such as "knowing, writing, and speaking", these gerunds can work as subject of the sentence, the direct object, the subject complement, or an object of a preposition.

if this is a true or false question its true

many were disgusted, nauseated and shook their heads with disapproval upon finding out about the recycling of water process. however, they do not seem to understand that this process actually saves water.

although individuals may argue that it is unhealthy, and or unsafe to drink water that is "from toilet to tap" , the water is 100% safe to drink and involves forcing the water across a membrane, which "removes   any impurities, including viruses, pharmaceuticals and dissolved minerals" , according to paul rozin, a psychology professor who studies revulsion.

i agree that that the thought of drinking water that once ran through someones kitchen sink isn't quite appealing, but recycled wastewater is safe to drink. it also saves water. "the city produces nine million gallons a day" claims russell schreiber, the city’s director of public works.

recycled waste water has absolutely no health concerns whatsoever. when wastewater goes into a system, it's absorbed back into the ground. thus, it goes into a sewer system, then goes through a treatment process that removes contaminants before being released. nonetheless, there is no problem in drinking water that has been recycled.

"in drought-ed california, there are six state agencies that use wastewater that comes from an intellectual property source," according to the university of california, riverside. studies show that this water is completely safe to drink, however, it still doesn't mean people are going to happily pour it in a water glass.

researchers hope it "may make consumers more amenable to drinking recycled wastewater," extraordinarily, women who have a higher "disgust reaction" and make most consumer purchasing decisions.