In the first stage of the demographic transition, crude birth rate is ________ and crude death rate is ________

A) low; high
B) high; low
C) low; low
D) high; high


Answer: D

Environmental & Atmospheric Sciences

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Expensive homes on coastal cliffs are at risk due to

A. erosion from streams. B. erosion from groundwater. C. erosion from ocean waves. D. erosion from wind.

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Which of the following best matches the description?Competition between members of different species.

A. interspecific competition B. producer C. omnivore D. carbon cycle E. herbivore F. ectoparasite G. intraspecific competition H. nitrogen cycle I. denitrifying bacteria J. secondary consumer K. habitat L. nitrogen-fixing bacteria M. trophic level N. limiting factor O. biomass P. community

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About two-thirds of the Latin American population lives along the South American Rimland

Indicate whether the statement is true or false

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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.

Environmental & Atmospheric Sciences