In an undisturbed stack of rock layers, each containing fossils of once-living organisms, where would some evidence of the most ancient life forms most likely be found? a. at the top of the stack b. near the top of the stack c. in the middle of the stack d. at the bottom of the stack

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

"record the time to complete a chemical reaction" would most likely be part of a lab procedure.