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Home Q & A Board Biology-Related Homework Help General Biology
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Dugg Dugg
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6 years ago
What do all sponges have in common?
A) They all have three germ layers.
B) All adults are free swimming.
C) They always reproduce sexually.
D) They all practice external fertilization.
E) They all live on the bottom of an aquatic environment.
Textbook 
Biological Science, Canadian Edition

Biological Science, Canadian Edition


Edition: 2nd
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mastemamastema
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