Milankovitch cycles ________
A) describe the timing of the northern lights in the thermosphere
B) describe the transpiration, evaporation, and precipitation of Earth's water
C) are changes in Earth's rotation about its axis and orbit around the sun that may trigger climate variation
D) refer to shifts in the temperature of surface water in the middle latitudes of the Pacific Ocean
E) describe upwelling and downwelling in the ocean
C
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Which of the following is a disadvantage of hydropower?
a. It creates high levels of carbon dioxide emissions. b. There is a high environmental impact from flooding land to form a reservoir. c. The cost of electricity produced from hydropower is lower than electricity produced from other sources. d. It has a moderate to high net energy. e. It is largely unavailable in the United States
Landslides happen mainly during or following heavy rainfall
Indicate whether the statement is true or false.
Describe the characteristics a substance must possess in order to qualify as a mineral, and then describe which of the following cannot be minerals, listing a specific reason for each
a. Gold nugget b. Seawater c. Quartz d. Cubic zirconia e. Obsidian f. Ruby g. Glacial ice h. Amber What will be an ideal response?
What is the difference between a quiescent and an explosive eruption?
What will be an ideal response?