How organisms get ATP out of the food they eat

Which of these statements are true about scientific theories and hypothesis

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.

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun