<span>e.sr⁺(g) → sr2⁺(g) + e⁻
When remove first electron became Sr</span>⁺, second Sr²⁺.
1. Rocks near mid-ocean ridge were younger than rock near trenches.
2. Matching bands of magnetic rocks were found on either side the mid-ocean ridge; record changes in earth's magnetic field over a period of time.
3. E<span>arthquake data showed oceanic crust is sinking on to the mantle at the trenches.</span>
Answer:
A -- incidence -- the occurrence, rate, or frequency of a disease, crime, or something else undesirable.
Explanation:
