What is the most common way in which sinkholes form?
A) A small explosion of methane gas from coal beds
B) A small explosion of CO2 gas from dissolving limestone
C) A rising dome of salt finally reaches the surface
D) The roof of a cave collapses
D) The roof of a cave collapses
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What type of behavior is described as anadromous?
a. Homing behavior to hatch b. Echolocation to find prey c. Stereo smell to find prey d. Schooling as defense e. Migration to freshwater to spawn
Assateague Island, Maryland, has avoided coastal erosion because it is largely undeveloped
Indicate whether the statement is true or false
Sediments produced by plants and animals in the sea are called ________
A) cosmogenous B) biogenous C) hydrogenous D) terrigenous E) volcanogenic
Which of the following best describes the primary cause of the environmental problem known as acid-mine drainage?
A. chemical breakdown of sulfide minerals B. excessive mining regulations C. poorly ventilated underground mines D. use of strong acids during mining operations E. all of the answers listed here