What is the structure of carbon dioxide an example of?
a. An element
b. An atom
c. A compound
d. A polar molecule
ANS: C
Compounds are formed when there are two or more elements contained in a molecule. Since carbon
dioxide contains both carbon and oxygen it is considered a compound. Water is another example.
Information can be found in the section The Water Molecule Is Held Together by Chemical Bonds
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An average American citizen consumes 35 times the resources of an average Indian citizen over the
course of his or her lifetimec Indicate whether the statement is true or false.
The lower limit to which the stream can erode is its ____________________. Fill in the blank(s) with the appropriate word(s)
Rapidly declining crude death rates are found in which stage of the demographic transition?
A) Stage 1 B) Stage 2 C) Stage 3 D) Stage 4 E) Stage 5