Well plagiarism in general is against all school rules everywhere and is also illegal. You can be suspended from school and college and it stays on your record. Plagiarism is not a good idea.
Spongin is a modified type<span> of collagen protein, </span>forms<span> the fibrous </span>skeleton<span> of most </span>organisms<span> among the phylum Porifera, the sponges. It is </span>secreted<span> by sponge cells known as spongocytes. Spongin gives a sponge its </span>flexibility<span>.</span>
Answer:
B. the tools needed to build
please mark a brainlist
