A(n) ________ event is characterized by the sudden loss of large numbers of plants and animals relative to the number of new species being added
Fill in the blank(s) with correct word
mass extinction
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Many large mammal species that have long generation times and low reproductive rates are prone to ____________________
Fill in the blanks with correct word
Which of the following terms refers to the slowing of the wind due to the random motion of air molecules?
A. molecular viscosity B. eddy viscosity C. mechanical turbulence D. convective turbulence
Describe how, when, and where Sun pillars are formed
What will be the ideal response?
How is an alluvial fan formed?
A. A landslide blocks the stream, causing sediment to accumulate upstream. B. A stream erodes down through older terraces and entrenched meanders. C. Sediment is deposited by debris flows and streams that decrease in velocity along the mountain front. D. A dam increases the speed of currents below the dam.