What two basic geologic processes contributed to the formation of folded mountain ranges like in Glacier National Park? A. Folding and breaking of ingenuous rocks and tectonic uplifting.

B. Faulting of sedimentary rock and erosion.

C. Volcanic ash buildup and faulting of rocks.

D. Folding and breaking of sedimentary rocks and erosion.

Which of the following represents the chemical reaction of hydrazine and hydrogen peroxide to produce nitrogen and water? a. nitrogen + hydrogen peroxide → hydrazine + water b. nitrogen + water → hydrazine + hydrogen peroxide c. hydrazine + hydrogen peroxide → nitrogen + water d. water + hydrogen peroxide → nitrogen + hydrazine

Environmental differences within ecosystems are generally caused by

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area