Breakwaters are commonly used in coastal engineering. What is the basic purpose of installing a breakwater?
A. keep sediment from filling a navigational channel
B. cause sediment to be deposited on the down-drift side
C. increase the amount of sediment moving through the surf zone
D. cause sediment to be deposited on the up-drift side
E. create a quiet area to moor boats and reduce erosion
Answer: E
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Indicate whether the statement is true or false
The Ivory-Billed Woodpecker, long thought extinct, may have been found in deep woods of Missouri. Even though a few individuals may have survived, this may not be enough to avoid extinction of this species
What else must these few birds do to ensure the survival of the species? A) Defend a territory against other bird species and predators B) Maintain a viable breeding colony in the face of environmental resistance factors C) Shift to a new source of food widely available in their region D) Migrate to a better habitat that is more protected from people
The _____ can dictate how you dress on a particular day or whether you take an umbrella with you when you go out; the _____ can dictate the types of clothes you have in your closet and whether your home has an air conditioner, a heater, or both.
A) temperature; weather B) weather; climate C) climate; temperature D) climate; weather E) temperature; pressure
Earth hits its perihelion position in January. Solar radiation is proportional to the distance squared between the sun and the earth, so why isn't it hot in "winter" at perihelion?
A) Precession modifies the effect as the earth wobbles on its axis. B) The ellipticity of the orbit is small, so the affect is small; seasons are caused by tilt of the earth's orbit. C) It is; it is called summer in the Southern Hemisphere, and there is just a time lag for the Northern Hemisphere. D) None of these is correct.