Viruses depend on the host cells that they infect to reproduce. When found outside of host cells, viruses exist as a protein coat etc.
true.
C.glass
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<span>A planulae is not one of the three major structures of coral reefs as it is one of the stages in the life cycle of a jellyfish known as the free swimming larvae stage.
Coral reef structures are made up of fringing reefs that grow directly from the shore,
atoll reefs that grow upward usually in a lagoon, and barrier reefs are separated from the land and shore by open water.</span>