The rock described in the poem Lyme Song is (), which belongs to () from the point of view of rock genesis.

① The rock described in the poem is (limestone), which belongs to (sedimentary carbonate) rock from the point of view of rock genesis.

② Is it possible to find biological fossils in this rock? I can't.

③ What is the name of the rock formed after metamorphism? Wind fossils. Or carbon dioxide.