What is the main environmental problem associated with the Mississippi River delta and what is to be done about it?
What will be an ideal response?
Answer: Dams upstream contain some of the silt that naturally replenishes the delta. With rising sea level and the sinking of existing sediments this means that the area of the delta is noticeably shrinking and saltwater encroaching. It has been proposed to divert freshwater into the marshes to enhance the vegetation but there is not plan and it is uncertain if this will solve the deltas problems.
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Every species on earth will eventually go extinct.
Answer the following statement true (T) or false (F)
Which is TRUE regarding strategic minerals?
A) China is the world's largest producer of strategic minerals. B) China is the world's largest consumer of strategic minerals. C) The world has about 1000 years worth of these minerals at current rates of consumption. D) The United States has increasingly depended on imports of these in the past fifty years. E) The Middle East is the world's most significant repository of strategic minerals.
In addition to sand moving along shore, how is beach sand permanently lost to the beach system?
What will be an ideal response?
As the temperature of a body increases, it will radiate energy at ____ wavelengths
a. the same b. longer c. shorter d. immeasurable