If x indicates the fossils of two closely related species, neither of which is extinct, then their remains may be found in how many of these strata?

If x indicates the fossils of two closely related species, neither of which is extinct, then their remains may be found in how many of these strata?

If x indicates the fossils of two closely related species, neither of which is extinct, then their remains may be found in how many of these strata?




A) one stratum
B) two strata
C) three strata
D) four strata


Answer: B