You might expect a flower pollinated by a hummingbird to
A. give off a fragrant smell.
B. open only at night.
C. be white in color.
D. be red in color.
Answer: D
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Traditional fishing provides low incomes, but these activities employ about ________ of the world's fishermen
A) 30 B) 60 C) 80 D) 90
Which of the following is true of branched chain hydrocarbons?
A) The longest carbon chain becomes the root name B) The longest carbon chain is always written horizontally C) both a and b D) neither a nor b
The majority of the wetlands that have been lost since the 1600s have been lost because of the development of cities.
Answer the following statement true (T) or false (F)
The spatial constraints of the secondary sector of the economy are the same as those of the economy's tertiary and quaternary sectors.
Answer the following statement true (T) or false (F)