You are a coastal geologist trying to help a coastal community restore its sediment-starved beach. You decide that beach nourishment is the best option, so you order that dredge sediment from the nearest river be placed on the beach. The sediment is 70% silt and 30% sand. What will be the effect of using this sediment?

The greenhouse effect is caused by ________.

You are testing the groundwater quality of an aquifer and find that it has high amounts of arsenic. What is the likely source?

The volcanoes of the Cascades Mountains in the northwest United States are related to melting of rock associated with a ________.

According to the currently accepted scientific model, which of the following is NOT correct about the formation of the Moon?

During a particularly cold winter in Florida, the temperatures remained below freezing for several weeks. To avoid freeze damage to the crops, farmers used well water to continuously spray the crop and maintain a protective coating of ice around the crop. Shortly after this long cold snap, sinkholes began forming throughout the region. Were these events linked?

Natural carbon sinks have generally matched the production of carbon dioxide until ________.

________ commonly serves as a protolith in the formation of phyllite.

Consult the figure below. What will eventually happen to the Everglades if the people of Miami and Fort Myers do not stop using the water?

According to the figure below, how much has atmospheric carbon dioxide (CO2) increased in parts per million (ppm) in approximately the last 50 years?