How is Melly using each of the following concepts to help her settle into her new
apartment?
• Olfactory bulb
• Sensory adaptation
• Difference threshold
• Brightness

Which of the following would be paid for with a state’s capital budget? a) lawmakers’ salaries b) a new bridge c) the salaries of state troopers d) education

Which of these is a disadvantage of hydrogen fuel cells? a. engines that use hydrogen fuel are more efficient than gasoline-powered engines. b. the only emission produced by hydrogen fuel cells is water. c. hydrogen fuel is continually available and useful for heating. d. hydrogen fuel is often purified in a process that emits lots of greenhouse gases.

Which statement indicates one difference between the gene that codes for insulin and the gene that codes for testosterone in humans?