As humidity increases, the water potential gradient across the inside and outside the leaf become more equal, and so the rate of transpiration decreases.  As the air becomes drier, transpiration of a leaf will increase or decrease?
increase


(Question)
Pigments in the skin act like a filter that can prevent the skin from making vitamin D. As a result, people with darker skin need more time in the sun than people with lighter skin to make the same amount of vitamin D.  Polly was out in the sun. She has light skin. Her skin likely absorbs more or less vitamin D than a dark-skinned person?
(Answer)
more


Ques: Bacteria with a mutation the helps resist antibiotics increase in numbers, so the mutation becomes more common.  If there are fewer bacteria with the right mutation, will the occurrence of the mutation become more or less?
Ans: less


(Q).
The higher the pH value is, the stronger the base.  If Jim decreases the pH value of his swimming pool, the base becomes stronger or weaker?
(A).
weaker


Ques:The more mass a moving object has or the faster its moving, the greater its momentum.  A small object will have more or less momentum than a large object?

Ans:less


Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids.  Kevin has a hybrid car and Steve has a large truck. Which car likely pollutes less hybrid or truck?
hybrid