The answer is D. Pick up trash
Explanation:
Soil fertility can be further improved by incorporating cover crops that add organic matter to the soil, which leads to improved soil structure and promotes a healthy, fertile soil; by using green manure or growing legumes to fix nitrogen from the air through the process of biological nitrogen fixation; by micro-dose ...
- - No.
This is because isthmus is a large piece of land stretching from one area to another.
Answer:
it is an area of functioning over which someone has legal authority to perform