Answer:
A
Explanation:
I believe the answer is A because conservation tillage reduces erosion & runoff but I'm not 100% sure.
Cells from the cheek are a type of epithelial cell, similar to skin. ... They can be seen faintly even at 40x (scanning power), but the most dramatic images are at 400x where the nucleus is clearly visible as a dark spot in the center of the cell.
Hope this helps!
