During the Cretaceous, increased rifting of Pangaea resulted in a/an ________ of the seas. Fill in the blank(s) with the appropriate word(s)
transgression
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Given the set of schools shown below, Find the weighted standard distance for the schools.
Eutrophication occurs when
A. fecal coliform bacteria enters drinking water. B. an industry returns heated water to its source. C. point source pollutants enter the groundwater. D. nutrient increase causes excessive aquatic plant growth.
Calcareous oozes form much slower than siliceous oozes based on the rate their components dissolve in seawater
Indicate whether the statement is true or false
A much greater use of breeder or fast-neutron reactors would pose a greater safety risk because fast-neutron reactors would generate greater amounts of
A) heavy water, which can easily leak out into the local community near nuclear power plants. B) radon gas, which over many years can greatly increase the risk of cancer in the region surrounding a nuclear plant. C) plutonium, which is more easily used to construct nuclear weapons. D) lead, which is widely used in the creation of bullets and other ammunitions.