The Burgess Shale preserves a remarkable fossil record of: a. marine life during initial diversification of animals in the Cambrian Period, 505 million years ago. b. the tracks of dinosaurs walking on land. delicate flowers and mushrooms from the early invasion of land plants. c. molecular evidence of bacteria and other organisms. d. plants, insects, and mammals around 50 million years ago, when the age of mammals began.

Graded assignment lab report answer the questions below. which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.