Includes all of the living organisms on earth so it should be glaciers
The answer for this is carbohydrates.
The lancelets consist of approximately 32 types of
fish-like maritime chordates in the order of Amphioxiformes,
with an international dissemination in tropical seas and low temperate, they are commonly found half-buried in sand. The lancelets show 4 of the major
characteristics of the phylum chordata.
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Parasitism; the tick benefits from the human, the host.
