Which of the following would be a negative feature of monoculture crops on an ecosystem? A : Monoculture crops produce more food.

B : Monoculture crops produce less food.

C : The genetic variation of organisms is reduced.

D:Crops need harvesting at the same time.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.

acceleration = 18/3 = 6 m/s per second.

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-lavira: )