Which is larger ? 1 millimiter or 1 centimeter

Casts and mold are a type of preservation where the original material decays, leaving a mold in surrounding rock that can be filled with another sediment a. true b. false

Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?

Discuss the similarities and differences between whale flippers and tail flukes(*back fins, not the fish) and fish fins, using the scientific terms "homologous structures" and "analogous structures" in the discussion (5-7 sentences)