Grazing animals and the grasses they eat have both evolved in response to each other's influence. This process is known as
A. extinction.
B. competitive exclusion principle.
C. coevolution.
D. interspecific competition.
Answer: C
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The recurrence of drought as conveyed through the return period is expressed as
A) (number of years of record) / (rank for a specific precipitation event). B) (rank for a specific precipitation event) / (number of years of record). C) (magnitude of a specific rainfall event) / (duration of the rain event). D) (duration of the rain event) / (magnitude of a specific rainfall event).
Which of the following lists the four types of volcanoes shaped like hills and mountains?
A) Cinder cone, shield, composite, dome
B) Fissure, shield, cinder cone, dome
C) Crater, cinder cone, crater, dome
Balance the following equation. ____ NO ? ____ N2O + _____ NO2
A) 3, 1, 1 B) 3, 0, 0 C) 4, 4, 8 D) 1, 2, 4 E) 6, 2, 1
Annual temperature range:
