Answer:
Sand
Explanation:
Space, water, energy, and air are all needed for an organism to survive. Sand is just somewhere an organism could accustom to live in that environment.
<span>Tunicates resemble a rod on the sea floor.
Tunicates are members of the phylum Tunicata, and are intvertebrate animals. They are commonly known as sea squirts.
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Four gamete types can be produced:
pY, py, PY, and Py