Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes. Having read the above passage, choose the right answer to the following question (choices are scarce or plentiful ): John's town used to have little water, back when there were several thousand people. However, now that the town holds only a few hundred people, the water availability is scarce or plentiful?
plentiful

(Question)
Larger alkenes have lower boiling and melting points, so they are liquids or waxy solids at room temperature. Having read the above passage, choose the right answer to the following question (choices are lower or higher ): Harry was sorting alkenes. The largest of the bunch have lower or higher boiling points?
(Answer)
higher

Ques: Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids. Having read the above passage, choose the right answer to the following question (choices are more or less ): Do gas engine cars pollute more or less than electric engine cars more or less?
Ans: more

(Q).
For bases we can state the folllowing: The higher the pH of a substance, the more basic it is. Having read the above passage, choose the right answer to the following question (choices are water or bleach ): Sue measured water to be a pH of 7, and she measured bleach at a pH of 11. Which substance is more basic water or bleach?
(A).
bleach

Ques:Gravity is a pull which all matter exerts on all other matter, the more mass, the stronger the pull. Having read the above passage, choose the right answer to the following question (choices are stronger or weaker ): A small planet has a stronger or weaker pull of gravity than a small planet?

Ans:weaker

Ques: More pollutants mean poorer air quality. Having read the above passage, choose the right answer to the following question (choices are cleaner or dirtier ): When a river gets emptied of a lot of waste chemicals it becomes cleaner or dirtier?
Ans:
cleaner