The crossopterygians were well-adapted to move onto the land because they had ____

A)lungs, but not necessarily a means for locomotion
B)a means for locomotion, but not necessarily lungs
C)cartilaginous skeletons
D)lungs and a means of locomotion
E)webbed feet


D

Environmental & Atmospheric Sciences

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Because physical geography is so broad and complex, the scientific method does not apply

a. True b. False Indicate whether the statement is true or false

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A. sediment size B. sediment distribution C. sediment size and sediment distribution D. seafloor structure E. sediment distribution and seafloor structure

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A major disadvantage of solar power is ________

A) antiquated and unreliable technology B) decentralization of control of electrical energy C) lack of knowledge about long-term economic impacts D) its efficiency level compared to other types of power E) the uneven distribution of sunshine around the world

Environmental & Atmospheric Sciences