Mass wasting events are commonly triggered by natural events, such as heavy rains, but human activity can also play a factor. Which of the following human activities have been linked to mass wasting events?
A. Excessive irrigation
B. Leaking septic systems
C. Vibrations from local traffic
D. Deforestation
E. All are correct
Answer: E
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How do mineral substitutions occur?
A) If minerals deep within the Earth's surface melt, elements may mix together and substitute within mineral structures. B) If minerals in water dissolve, elements may mix together and substitute within mineral structures. C) Elements that do not have similar ionic charge or size often attract each other and substitute within mineral structures. D) Elements with similar ionic charge, size, or both substitute for each other within mineral structures.
The people of northern Iraq, southeastern Turkey, western Iran, and parts of Syria that press for a state of their own are the
A. Arabs
B. Farsi
C. Persians
D. Kurds
Why might there be a lot of spacing between the desert plants shown growing in this photo?
A) The plants exploit water and nutrients preventing other shrubs from establishing in their area. B) The plants need room to grow and expand as they mature. C) The other plants around them have died because there is not enough space in the desert area where they grow. D) The plants exploit the nitrogen produced in the atmosphere causing only stronger plants to survive the harsh desert-like environment. E) The roots of strong plants are established and force other plants out because they are more mature.
A solution is prepared by dissolving 215 grams of methanol, CH3OH, in 1000. grams of water. What is the freezing point of this solution? [The freezing point depression constant for water is 1.86°C/mole solute in 1000g of water]
A) -6.72°C B) -12.5°C C) -25.0°C D) -40.3°C