Natural selection acts on the distribution of traits. When graphed, natural selection shifts the graph away (new population) from its original shape (original population). The original graph that serves as a baseline for the shifts in traits caused by natural selection is referred to as what type of distribution and is represented by what type of curve? a.) Normal distribution/Spiked-curve
b.) Abnormal distribution/Bell-curve
c.) Normal distribution/Bell-curve
d.) Abnormal distribution/Spiked Curve

well schools are being forced to embrace computers. unlike their "digital immigrant" teachers, these students are "digital natives", born into a world where technology is an integral part of everyday life. almost every student has access to a multitude of computers, laptops and tablet devices. it would be crazy to assume an assignment would  not be written on computer in this day and age.

don't delete this trying to

one would be wind another would be water density

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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only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.