In general, the restoring force for most wind-generated waves is ________
A) cohesion of water molecules
B) gravity
C) seismic activity
D) surface tension of water molecules
E) wind
B
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What is the main difference between a conceptual model and a physical model?
A. Conceptual models can only be used to describe concepts. B. A conceptual model represents the shape and form, while a physical model describes how a system behaves. C. Physical models can only be used to represent the real world. D. A physical model represents the shape and form, while a conceptual model describes how a system behaves. E. Physical models and conceptual models can be used to describe the same things.
Which of the following regions has the highest population density?
A) South Asia
B) Australia
C) Russia
D) Africa
E) North America
Convection:
A) is less important to making up the atmosphere's radiative energy deficit than is conduction. B) typically transfers heat downward during the day. C) plays no significant role at night. D) helps circulate heat throughout the atmosphere.
Which type of biologically important molecules includes many cyclic hemiacetals?
A) carbohydrates B) lipids C) proteins D) none of these