*Question*
The more acidic a solution is, the closer its pH value will be to 0  Erin is trying to get her solution to have a pH as far from zero as possible. The best way for Erin to do that is to have the acidity of the solution decrease or increase?
**Answer**
decrease

*Question*
As the amount of water increases, the melting point of rock decreases.  If Mona removes more water from her cauldron of melting rock, what will happen to the melting point of that rock increase or decrease?
**Answer**
increase

*Question*
The larger the animal, the heavier the exoskeleton, making movement more difficult.  Ease of mobility increase or decrease when the animal is decreased in size?
**Answer**
increase

*Question*
More recently, the death rate has fallen because of the availability of more food and medical advances.  In modern times, there is better medicine. This means there is a lower or higher death rate?
**Answer**
lower