How many carboxylic acids have the molecular formula C4H8O2?

A) 1
B) 2
C) 3
D) 4


B

Environmental & Atmospheric Sciences

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Distinguish between atoms and molecules. Which is made of which?

What will be an ideal response?

Environmental & Atmospheric Sciences

The spread of something over a given study area is

A) concentration. B) density. C) distribution. D) pattern. E) diffusion.

Environmental & Atmospheric Sciences

The crustal thickness in the Great Basin is ________ than mid-continental North American crust. 

A. thinner than oceanic crust and thinner B. thicker C. thicker than oceanic crust and thinner D. thinner  E. thicker than oceanic crust and thicker 

Environmental & Atmospheric Sciences

Annual row crops such as ________ cause the highest erosion rates because ________. 

A. Wheat and coffee; they need so much water B. Beans and coffee; trees are usually cut down for the fields C. Tea and beans; plowing in the fall is required for planting of these annual spring crops D. Corn and coffee; they use so many nutrients E. Corn and beans; soil is left bare for the majority of the year

Environmental & Atmospheric Sciences