which type of sentence is this? tooth enamel—the hardest substance in the human body—doesnt consist of…

which type of sentence is this? tooth enamel—the hardest substance in the human body—doesnt consist of living tissue, so it cant regenerate itself if it is damaged. simple compound complex compound - complex
Answer
Brief Explanations:
A compound - complex sentence has at least two independent clauses and at least one dependent clause. The independent clauses here are "Tooth enamel doesn't consist of living tissue" and "it can't regenerate itself if it is damaged", and "if it is damaged" is a dependent clause.
Answer:
compound - complex