Answer:
Group 2
Explanation:
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Answer:
Cnidarians represent a more complex level of organization than Porifera. They possess outer and inner tissue layers that sandwich a noncellular mesoglea. Cnidarians possess a well-formed digestive system and carry out extracellular digestion.
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Meiosis is used to to make sex cells.
Mitosis is used to make regular cells for you body.
Answer:
Mitochondrial DNA is useful as a molecular clock because it displays uniparental inheritance
Viruses are made up of DNA