The era of "ancient life" is known as the
o paleozoic
o precambrian
o mesozoic
o cenozoic

Apaleontologist finds a plant fossil that shows that the plant had seeds. what can the paleontologist conclude?

Variety of living organisms; includes genetic, species, and ecological types.

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.