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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 enviro…

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 enviro…
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2 votes
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

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User Rdmueller
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7.6k points

2 Answers

1 vote
flatworms.................
answered
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.
answered
User Tonymarschall
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7.9k points
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