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.  Two friends are headed to the beach, Mike and John. Mike is white, and John is black. Both want to make the same amount of vitamin D through sun exposure. The person who will take less time to make the amount of vitamin D is Mike or John?
Mike


Different types of rocks weather at different rates. More resistant types of rocks will remain longer.  When Dan went to the beach, he found rocks that had been eroded. Some rocks were hardly weathered though, so those must have a resistance that is higher or lower?
higher


Q: Increased resource use generally means more waste; electronic waste from developed nations is a growing problem in the developing world.  If Milo makes an effort to use less resources in his day to day life, what will happen to the amount of waste he produces increase or decrease?
A: decrease


Question: The more curved the surface of a lens is, the more it refracts light.  Jeff built a lens with the highest refraction possible. The lens is likely very or not curved?
Answer: very


*Question*
The elastic force increases the more the material is stretched or compressed.  When a rubber band is stretched, its elastic force increases or decreases?
**Answer**
increases


Q: Lighter, more streamlined vehicles need less energy.  A vehicle that was sleek and aerodynamic and a vehicle that was bulky were each driven the same distance over the same amount of time. Which vehicle needed to less energy to power it bulky vehicle or sleek vehicle?
A: sleek vehicle