The difference between a stone-tool mark and a tooth mark is that:
a. tooth marks leave smooth grooves, and stone-tool marks leave many parallel grooves.
b. tooth marks occur along the entire shaft of the bone, but stone-tool marks occur only at the end of the bone.
c. stone-tool marks are crooked because hominins were not skilled at using stone tools.
d. stone-tool marks contain stone flake residue.

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.