(Plz help ASAP) List at least three different sources used for naming organisms

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

18. use the activity series to predict whether the following synthesis reaction will occur. write the chemical equations for the reaction if it's predicted to occur. (s) + o2(g) -> *note: it is possible.*

Why are people not able to skip a dive to the deepest part of the ocean