This is a very confusing question since it sounds more like a statement. sorry really wish I could help :(
Oxygen's valence, based on the Number of valence electrons or outermost electrons that oxygen has would be 6.
Option three should be correct
Knowledge of earth system in order to protect, understand and develop research methods.
Answer:
least, most
Explanation:
Antimicrobials are substances that function by limiting the activities of microorganisms either by killing them or by inhibiting their growths.
Antimicrobials that exhibit a wide range of cellular targets are least selective of the type of cells they kill or inhibit. They are also said to have a wide spectrum of activities.
On the other hand, antimicrobials that exhibit a narrow range of cellular targets are most selective of the type of cells they kill or inhibit. They are said to have a narrow spectrum of activities.
