I wanna say D, but I’m not entirely sure
a.
In soil erosion, the soil is carried away from by the wind or water from the top layer of the ground. Soil formation is making soil. It can be by the deposition of the soil from water or wind
Answer:
hey you didn't provide the complete question. what's the full question maybe I could help
D.8
Outermost shell means valence electrons and the 36th element (krypton) has 8 valence electrons