Alluvial fans develop at unusual locations where stream gradients abruptly increase for a short distance.
a. true
b. false
Ans: b. false
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Leaching is a major cause of the ocean's salinity
Indicate whether the statement is true or false.
In 1962, Rachel Carson published the book Silent Spring, documenting the devastating effects of pesticides, including DDT, on birds and other organisms. By 1972, new policies had been implemented that banned the use of DDT in the United States
Given the response to ban DDT by 1972, which of the following steps in the policy process occurred in the late 1960s? A) Establishing the problem to be addressed by policy B) Enforcing rules established by the policy C) Evaluating the success of a policy D) Debating the potential impacts of a policy
Beach nourishment is the natural replenishment of sand along a beach by littoral drift
Indicate whether the statement is true or false
The first species to colonize previously disturbed or damaged ecosystems are called a(n)
A) sere. B) pioneer community. C) successor. D) establishment.