Soils with a high smectite clay composition are at risk of land subsidence
a. True
b. False
Vegetation increases the swelling of soils.
a. True
b. False
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Which of the following best describes a mass wasting event referred to as a fall?
A. material moving down-slope along a surface B. material tumbling through air or down a steep slope C. material moving as a viscous fluid D. mixture of rock and snow
Buying shade grown coffee and cocoa has a minimal effect on local ecosystems where they are grown.
Answer the following statement true (T) or false (F)
How are hydrogen isotopes used to infer polar temperature records?
What will be an ideal response?
If the ocean's water evaporated completely leaving its salts behind, what would the dried residue look like?
A) It would cover the entire planet with an even layer 45 meters thick. B) It would evaporate into the air with the water. C) It would leave a thin layer of salts at the bottom of the ocean basin. D) Approximately 35% of the Earth would be covered with salt.