About what percentage of freshwater is groundwater? How does this change if glacial ice is excluded?
What will be an ideal response?
About 30 percent of all Earth's freshwater is groundwater. However, when glacial ice is excluded, 96 percent of freshwater occurs as groundwater.
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Which location in the Caribbean was one of the earliest spots where HIV/AIDS was detected?
A) Dominican Republic B) Puerto Rico C) Montserrat D) Haiti E) Jamaica
Sedimentary structures serve as clues to depositional settings. The following features are sedimentary structures:
a. Bedding b. Ripple Marks c. Mud Cracks d. Fractures e. All of the above except d
What is considered to be the densest type of crust?
a. Basalt b. Continental crust c. Granite d. Andesite
Volcanoes with large, steep-sided cones, called _______________-volcanoes, often form near subduction zones
Fill in the blank with correct word.