The first scientific expedition to use an echo sounder was the ________

a. United States Exploring Expedition
b. Meteor expedition
c. Voyage of Trieste
d. Challenger expedition


b

Environmental & Atmospheric Sciences

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a. humid continental b. Mediterranean c. tropical d. oceanic e. desert

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What is the name of the following compound?CaCl2

A. calc two B. calcium chloride C. dichlorocalcium D. carbon chloride E. dicalcium chloride

Environmental & Atmospheric Sciences

What compounds did the United States ban in the late 1970s for all nonessential uses?

Environmental & Atmospheric Sciences