Explain how warmer coastal waters resulting from global climate change may affect coral reefs
What will be an ideal response?
If water temperatures increase many species of coral will eject their zooxanthellae, subsequently bleaching and dying. Also, global climate change is strongly correlated with rising carbon dioxide levels, increasing amounts of which will dissolve in ocean waters. This produces acidification of ocean waters, and increased acidity increases the conversion of limestone, which comprises the corals' skeletal material, into soluble bicarbonate, i.e. increases the mortality of corals. On the other hand, corals may be able to colonize waters that were previously too cold for them and also move into low-elevation areas that may become flooded by expanding oceans.
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The Russian Domain's unpredictable politics and poor economic conditions have led to this migration pattern.
A) movement into the southern Russia for agricultural opportunity B) Jewish populations within Russia returning to Russian cities from Israel and the U.S. C) eastward expansion into Siberia D) urban-to-rural due to overcrowding in major cities E) young, well-educated populations leaving Russia for other countries
What is the main problem facing Ogallala aquifer?
a) overpumping may cause southern parts of the aquifer to go dry in the next 100 years b) it has become contaminated with radioactive waste from the Chernobyl accident c) precipitation is heavier to the east, causing tilting of the entire formation d) leakage from chemical processing plants are polluting the entire aquifer e) the groundwater is becoming more salty from water from the pacific Ocean
Instructions: Choose one answer from each pair of selections. Hurricanes are WARM | COLD core lows
The capital of Laos, Vientiane, lies in along the border with Thailand and the:
A) Indian Ocean B) Mekong River C) South China Sea D) border with China