Which of the following features is unique about Earth?
A. Earth has an atmosphere.
B. Earth is composed primarily of rocky material.
C. Earth has liquid water on its surface.
D. Earth is in orbit around a star.
E. Earth has a moon.
Answer: C
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When overland flow becomes concentrated on an interfluve, it creates small grooves called _________, which can enlarge to form _________ if erosion of the slope is not controlled.
A) striations; potholes B) potholes; striations C) rills; gullies D) gullies; rills E) striations; gullies
Species with a steady death rate throughout life are characterized by
A) Type I survivorship. B) Type II survivorship. C) Type III survivorship. D) none of the above
Which statement best characterizes neap tides?
A) Neap tides occur when the moon, Earth, and sun form a right angle. B) Neap tides represent extreme tidal ranges. C) Neap tides occur at the new and full moons every month. D) Neap tides correspond with the timing of spring tides.