Which simple machines combine to make scissors? a. one lever and two wedges b. two levers and two wedges c. one inclined plane and two wedges d. two inclined planes and two wedges

Metamorphic rocks are formed when sedimentary or igneous rocks are subjected to heat or pressure and recrystallize without melting. which of the following rocks results from the metamorphism of limestone? a. granite b. slate c. sandstone d. marble

Which statement about dna replication is true? a. eukaryotes only have one circular chromosome that unwinds at multiple locations. b. eukaryotes can only replicate one segment of a chromosome at a time. c. prokaryotes can only replicate their single circular chromosome in the nucleus. d. prokaryotes only have one origin of replication to initiate replication.

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?