Identical waves superimposed out of phase produce a wave of decreased
A. frequency.
B. amplitude.
C. wavelength.
D. all of the above
Answer: B
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An increase in a country's agricultural density would suggest a(n)
A) decrease in the amount of agricultural land. B) decrease in the number of farmers. C) increase in the areas of its urban centers. D) increase in the size of its population. E) decrease in the number of farm animals.
The most common function for bioluminescence in the ocean is thought to be attraction of mates during reproduction.
Answer the following statement true (T) or false (F)
Vertical pressure gradient forces are usually much larger than horizontal pressure gradient forces
Indicate whether the statement is true or false
The ratio of reserves to annual production (R/P) is an indication of:
A) how much oil each OPEC country is allowed to produce B) how much energy countries are allowed to hold in reserve C) the price/barrel as determined by the total output around the world D) the number of years the known reserves will last E) the effect of non-OPEC countries on total world production