Dudes, I want a boyfriend

Which of the following statements is not true about regions? a.) regions have fixed boundaries that are determined by the region's inhabitants. b.) a region can be defined by physical characteristics, such as climate, landform, and vegetation. c.) regions can change over time. d.) a region can be defined by human characteristics, such as language, government, and economic activity. e.) the same location can be considered part of multiple regions.

With the use/abuse of alcohol, the heart is more efficient in the use of nutrients by the heart tissue.

What will happen to a firms profit maximizing quantity in the short run if there is a significant increase in rent