<span>Valence is defined as number of electrons that are present in the outermost orbital. Oxygen is in the 16th column of the periodic table and the total number of valance electrons is determined by units place digit of the column position which is 6 for oxygen. The outermost orbital is the high energy level and there are two in that orbit. So the valance is +2.</span>
Answer:
1. The grasses that are diseased.
Explanation:
1. In the event that the grasses were diseased, the environment will recoup itself from this sort of disturbance.
