What is the definition of hydrocarbon? A) electrons shared between two different atoms
B) a single line bonding carbon and hydrogen
C) large molecules that are produced by living things
D) a large chain of carbons and hydrogens bonded together

Which one would it be? I am lost. Please help, asap! Tysm!

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

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measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.