Which of the following types of skeletal material is not found in at least some sponges?
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Biology, 07.01.2020 05:31, DragonLovely
Which of the following types of skeletal material is not found in at least some sponges?
select one:
a. spongin
b. muscle
c. calcium carbonate
d. spicules
e. silica
Answers: 3
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