(Question)
Given the fact that: The forest habitat of elephants has also decreased in size due to humans moving in, so the numbers of the elephants have decreased. Answer the question: If a herd of elephants is living happily in a forest and a group of humans then decides to move in, what happens to the elephants they decrease in number or they increase in number?
(Answer)
they decrease in number

(Question)
Given the fact that: Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids. Answer the question: Ian wants to produce more pollutants, so he buys a car that is a plug-in hybrid. The car will run on electricity worse if it's plugged in for a longer time or shorter time?
(Answer)
shorter time

(Question)
Given the fact that: Bases have pH values above 7. The higher the pH value, the more strongly basic the substance. Answer the question: If Mona is filling her pool with chemicals to change the pH level of the water and she increases the pH, what happens to the baseness of the water increase or decrease?
(Answer)
increase