Chapter 4: Ecosystems The Living World Unit. Members of an Ecosystem Eukaryotic cells (have nucleus) Prokaryotic cells (no nucleus/bacteria) Different.
FISHES (yes, that’s the proper word)
Jawless Fish Phylum: Chordata Sub-Phylum: Vertebrata Class: Agnatha.
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FISHES (yes, that’s the proper word) ICHTHYOLOGY (the study of fish)
