A given volume of a denser substance is heavier than the same volume of a less dense substance.  Compared to a box of bricks a box of feathers would be lighter or heavier?
lighter


(Question)
More water allows more chemical reactions.  Rita added more water to her beaker. The amount of possible chemical reactions decreases or increases?
(Answer)
increases


Ques: For a given medium, sound waves travel more slowly at lower temperatures.  If Milo is listening to the radio in his room and the room gets hotter, what happens to the speed of the sound waves generated by the radio increase or decrease?
Ans: increase


(Q).
Nations that have more industry produce more hazardous waste.  The United states has more industry than South Korea. Therefore, there is more hazardous waste in South Korea or the United States?
(A).
the United States


Ques:Low food supply or a lack of space can lower birth rates, increase death rates, or lead to emigration.  If there is more food in a place then more people will live there or die?

Ans:live there


Ques:However, the melanocytes of people with darker skin produce more melanin.  Since Kim has more melanin than Jennifer, when they lay out in the sun Jennifer's skin is darker or lighter than Kim's?

Ans:
lighter