In a Wyoming ecosystem, a wildfire removes most of the lodgepole pine trees. Over the next several decades, new grasses sprout, followed by shrubs and eventually young trees. This process of ecological change is known as which of the following?

The Devils Tower National Monument in Wyoming is composed primarily of phonolite porphyry, an igneous rock. Geologists believe it formed when molten rock was pushed into sedimentary rock layers and then cooled. This specific type of formation is best described as a(n):

Gray wolves were reintroduced to Yellowstone National Park in the 1990s. This reintroduction led to a decrease in the elk population, which allowed willow and aspen trees to recover, eventually providing habitat for beavers and songbirds. This ecological phenomenon is an example of a:

Wyoming is one of the leading producers of wind energy in the United States. Which of the following best describes the energy transformation that occurs as a wind turbine generates electricity?

The Green River Basin in Wyoming contains one of the world's largest deposits of trona, a mineral used to make soda ash. Trona is an evaporite mineral. Which geologic process most likely led to the formation of these vast trona deposits?

The Wyoming toad is an endangered species that experiences fluctuations in population size due to various environmental factors. If a small population of these toads is isolated by a new highway, the genetic diversity of the population may decrease due to random chance events rather than natural selection. This mechanism of evolution is known as:

In the Greater Yellowstone Ecosystem, wolves are considered a keystone species. When wolves were reintroduced, they altered the foraging behavior of elk. This behavioral change reduced the overgrazing of young willow and aspen trees along stream banks, leading to an increase in songbird and beaver populations. This process is an example of which ecological phenomenon?

In the Bighorn Basin of Wyoming, paleontologists use index fossils to determine the relative ages of rock layers. If a specific fossil of a trilobite species is found in Layer A but not in Layer B, which is located directly above Layer A, what can be inferred using the Law of Superposition?

A biologist in the Red Desert of Wyoming is studying a population of pronghorn. If the birth rate and death rate are equal, but the population size is significantly decreasing over a three-month period, which ecological factor must be responsible for this change?

The Grand Tetons in Wyoming are primarily the result of normal faulting along the Teton Fault. If the crust is being pulled apart (extension), causing the hanging wall to move downward relative to the footwall, which type of plate boundary stress is most likely responsible for this geologic feature?

The Yellowstone Caldera is often described as a 'supervolcano' because of its ability to produce massive eruptions. Which type of magma is most often associated with these explosive eruptions in Wyoming, due to its high silica content and high viscosity?

An environmental scientist in Wyoming is measuring the albedo of different surfaces in the Snowy Range. Which of the following surfaces would reflect the highest percentage of solar radiation back into the atmosphere, thereby helping to keep the local area cooler?