The answer is A. They have a hydrocarbon backbone that can be chemically altered.
Answer:
C, Cubic feet
Explanation:
Fertiliser should be applied as cubic feet. This allows more precise control over the area of soil. Most notably the soil is not a 2 dimensional surface but a 3 dimensional one that extends below the earth. Although the student is pouring the fertilizer on top of the earth its is spreading in a length width and height. This should be accounted for when amount is being calculated.
