Answer: Land must have had no prohibited substances applied to it for at least 3 years before the harvest of an organic crop.
Explanation:
The answer is;
Biosphere > Biome > Ecosystem > Community > Population
> Organism > Organ System >
Organ > Tissue > Cell > Organelle > Molecule > Atom.
This is a clear representation of the complexity of life on
earth. Over the course of evolution, abiotic elements developed into biotic
elements then to unicellular organism and finally to complex multicultural organisms.