What do the N and S on the diagram represent?

Scientists observed a rock stratum with fossil. if mollusks evolved before arthropod, where will their fossils be found.

Abacterium was found to contain a sequence of atcgggatcct in its genome. a few generations later, the sequence was found to be atcatcct. what type of mutation caused this change in the bacteria? a. duplication b. insertion c. inversion d. translocation

What strategy is most to take control of the opportunities and challenges life offers? commitment flexibility integrity ownership