How many unpaired electrons are present in an oxygen molecule?

A) 0
B) 1
C) 2
D) 4


C

Environmental & Atmospheric Sciences

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What ideas brought a renewed interest to the idea of continental drift?

A. evidence that a large meteorite caused extinction of the dinosaurs B. evidence that the entire Earth was once frozen C. data that a submarine mountain occurred beneath the middle of the Atlantic Ocean D. evidence that similar meteorites fall on different continents

Environmental & Atmospheric Sciences

Air pollution helps protect building stone from weathering

Indicate whether the statement is true or false

Environmental & Atmospheric Sciences

The most studied and well-documented urban climatic effect is the ________

Fill in the blank(s) with correct word

Environmental & Atmospheric Sciences

A(n) ________ such as Basque in Europe, is a language unrelated to any other and therefore not attached to any language family

A) isolated language B) dead language C) confining language D) diffusing language E) lingua franca

Environmental & Atmospheric Sciences