Waikiki Beach is kept at its desired size by ________
A) nourishment
B) groins
C) dams
D) a seawall
E) recycling cleaned garbage
Answer: A
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Agricultural density is the number of
A) farm animals per area suitable for agriculture. B) farmers per area of arable land. C) farms per total area of land in a country. D) people per area of arable land E) acres of farmland per the total area of a country.
Sailors were able to find longitude at sea before they could measure latitude.
Indicate whether the statement is true or false.
Phil paddles his canoe at 8 m/s in still water. Keeping this speed he then paddles upstream in a river that flows downstream at 6 m/s. To his friend sitting on shore, Phil's speed is
A. 10 m/s. B. 8 m/s. C. 2 m/s. D. 6 m/s.
What suggests that Drakes Estero is quite shallow?
The question is based on Map T-15, the “Point Reyes, California” quadrangle (scale 1:62,500; contour interval 80 feet) showing Point Reyes and Drakes Bay in Point Reyes National Seashore (38°01'38"N, 122°57'51"W). What will be an ideal response?