B.. Describe how each of the following forces contributes to devolutionary pressures within a country.
1. Cultural diversity
2. Regional economic differences
3. Physical geography and territorial size

How is the introduction of the cane toad to queensland, australia an example of the unintended consequences of using non-native species to control pests? (site 1)

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.

The tension between the issues of slavery and immigration led to the destruction of which political party? a) constitutional union b) democratic c) know-nothing d) whigs