The more energy the particles in matter have, the faster and more strongly they vibrate.  Don wants to make sure that his particles will move slower, so he will make sure the energy they have is more or less?
less


More recently, the death rate has fallen because of the availability of more food and medical advances.  Ian's town had fewer deaths this year since the food supply changed, which means that this year the food amounts were increased or decreased?
increased


Q: We can say that resistance and current in an electric circuit areinversely proportional, because as the one increases, the other decreases, and vice versa.  Harold decreased the current in a circuit. The resistance now is higher or lower?
A: higher


Question: As the population increases, the food supply, or the supply of another necessary resource, may decrease.  A increase or decrease in the population cold lead to more food availability?
Answer: decrease


*Question*
As humidity increases, the water potential gradient across the inside and outside the leaf become more equal, and so the rate of transpiration decreases.  Ian wants the transpiration rate to rise in his leaves, so he will do what with the humidity levels decrease them or increase them?
**Answer**
decrease them


(Question)
A given volume of a denser substance is heavier than the same volume of a less dense substance.  Sarah is carrying two tubs, one is filled with rocks, the other with feathers. The tub with feathers will be lighter because it is more dense or less dense?
(Answer)
less dense