3. These are the benefits of using organic fertilizer except ane.
It is inexpensive.
B. It increases the yield.
C. It is safe to use and environmentally-friendly,
D. None of the above
4. It is the most needed thing to be applied to an unhealthy plant,
A. Air
B. Fertilizer
C. Pesticides
D. Water
5. It is the most important factor affecting the growth of trees.
A. animal
B. climate
C. farmer
D. place​