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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Answer:
B. Cartilaginous fish
Explanation:
Sharks have a cartilaginous skeleton. Cartilage is less dense than bone which allows sharks to move quickly through the water without using too much energy.
A grasshopper may use the energy to move around, store it or use it for nutrients. There may be many answers to this.
Answer:
Earth, Solar System, Milky Way galaxy, Universe.
Explanation:
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