A community may undergo a regime shift or a phase shift when ________
A) they suffer a natural fire or flood
B) lose keystone species or suffer a major climatic change
C) pollutants cause a rapid rise in mutations
D) all invasive and exotic species are removed
E) have too many symbiotic relationships among species
B
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All dunes originate in desert conditions
Indicate whether the statement is true or false
Mediterranean climates are characterized by ____
A) mild, wet winters and mild-to-hot, dry summers B) cold, wet winters and hot, humid summers C) cold, relatively dry winters and mild, humid summers D) mild, wet winters and mild, humid summers
Moving toward the southwestern border of the United States, Spanish is increasingly spoken in addition to English. What type of region does this gradual change of language reflect?
A) formal B) functional C) vernacular D) geo-linguistic E) bilingual
The dry adiabatic lapse rate is constant
Indicate whether the statement is true or false