What level within an organism is smaller than an organ system? A. Ecosystem
B. Biome
C. Organ
D. Organism

i think C

Explanation: The levels, from smallest to largest, are: molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere.

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the answer is: metamorphic rocks often show the presence of fossils, also a

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-lavira: )

multiplying and dividing the two decimals and the eqations by the same number of the overalls