Use the following to answer questions :
Refer to the diagram below, depicting a sponge cross-section.
-Which structure is an opening for water to enter the sponge?

Question

Use the following to answer questions :
Refer to the diagram below, depicting a sponge cross-section. 
-Which structure is an opening for water to enter the sponge?

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The Answer of Use the following to answer questions :
Refer to the diagram below, depicting a sponge cross-section. 
-Which structure is an opening for water to enter the sponge?

Use the Following to Answer Questions