Which of the following is true of an edge city? a. it is increasingly used for heavy industry
b. it has a large amount of recently developed retail an office space
c. it is close to bankruptcy
d. it is located on the edge of a river lake or other physical feature
e. it is an outlet for a regions trade

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which elements do geologists measure to determine the age of an organism’s remains? check all that apply.

carbon-14

nitrogen

carbon-12