Which term refers to the way light interacts with the surface of a rock or mineral? A. density
B. luster
C. cleavage
d. hardness

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.

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.

Why are human population trends difficult to predict?