Which statements about scientific explanations are true? I. Scientific explanations must prove that a hypothesis is true.
II. Scientific explanations should be based on evidence or data.
III. Scientific explanations must have logical and consistent arguments.
IV. Scientific explanations should use scientific principles, models, and theories.
OA. I, II and III only
OB. I, II, III and IV
Oc. II, III and IV only
OD
Il and Ill only

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na

Carbon based or cells?

The answer to this is the 3rd choice!