Answer:

Explanation:
Ionic bond is a bond between metals and non-metals with strong forces of attraction between charged ions.
Answer:
B is the correct answer hope it helps
Chemical change because it cannot be reversed
Answer:
Erosion is the washing away of the uppermost part of the earth crust. Once erosion starts it only gets worse because, erosion wash away further soil, causing the eroding channel to futher expand, increasing the erosion.
Lack of vegetative cover allows erosion which washes away soil nutrients, further worsening the soil against soil vegetative cover.