The graph below shows the value of the US dollar versus the Canadian dollar. A graph titled Value of U S Dollar versus Canadian Dollar has month on the x-axis, from October 2012 to March 2013, and Canadian Dollars per U S Dollar on the y-axis, from 0. 96 to 1. 4. A line is drawn to connect the points on the graph. The line is at the lowest point in October, and it is the highest in March. For the time period shown, the value of the US dollar was generally rising against the Canadian dollar. Falling against the Canadian dollar. More than twice that of the Canadian dollar. About half that of the Canadian dollar.

Apopulation of deer mice was introduced into a desert ecosystem. being dark-colored, the deer mice stood out in the sand and were easy prey for predators. over a few years, the color of the mice changed from dark brown to light brown. what role does natural selection play in this example? a. the change of color camouflaged them, which them hunt better. b. the change of color enabled them to regulate their body temperature. c. the change of color allowed them to hide better from predators. d. the change of color made their bodies tolerant to the harsh desert sand. e. the change of color allowed them to deflect the excessive heat.