The highest level of organization for living things is the BIOSPHERE; it encompasses all other levels. The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.
1.), missing links
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Answer:
The answer is, D. Aphotic.
Water (H2O) takes up more than 60% of the body thus the answer is C
