Question: Acids have pH values below 7. The lower the pH value, the more strongly acidic the substance.  Having read the above passage, choose the right answer to the following question (choices are less or more ):   Alan's lye has a higher pH than his soda. His lye was less or more acidic?
Answer: less

Question: An increase in predators, the emergence of a new disease, or the loss of habitat are just three possible problems that will decrease a population.  Having read the above passage, choose the right answer to the following question (choices are increase or decrease ):   If there are very few wolves the deer population will increase or decrease?
Answer: increase

Question: If there are more greenhouse gases in the atmosphere, more ultraviolet radiation will be trapped and the Earth will heat up.  Having read the above passage, choose the right answer to the following question (choices are increase or decrease ):   Billionaire Joey McMoneystuffs added 3 new jets to his already large fleet of personal aircraft. One day, he decided to have them race each other, burning excess fuel and adding greenhouse gases to the atmosphere. When the resulting ultraviolet radiation becomes trapped, the Earth's heat index will increase or decrease?
Answer:
increase