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Which of the following animals is the most complex? Base your decision on body plan, structures used to carry out various functions, and structures used to respond to the environment flatworms hydras sponges
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Which of the following animals is the most complex? Base your decision on body plan, structures used to carry out various functions, and structures used to respond to the environment

flatworms
hydras
sponges
sea urchins

User Rdmueller
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7.6k points

2 Answers

1 vote
flatworms.................
User Petike
by
9.0k points
4 votes
I think so Flat worms are more complex in all these options.because they have better response system than other options.
User Tonymarschall
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8.1k points
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