Why do scientists find different fossils in different rock layers?

Which of these best describe conduction? a. transfer of heat between two objects that are touching b. transfer of heat by the actual movements of warmed matter c. the process in which energy is emitted by one object, transmitted through space, and absorbed by another d. the process in which energy is released by molecules

The images show fossils of a modern bird and two extinct organisms (a tyrannosaurus rex and an archaeopteryx). based on the structure of the three organisms, it can be concluded that . the archaeopteryx and bird have wings, while dinosaurs have limbs. so, it can be concluded that .

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.