Which of the following are the characteristics of organic farming?
1. Use of chemical fertilizers to improve soil fertility.
2. Frequent decomposing and fallowing.
3. Use of herbs to control pests.
4. Higher productivity per hectare.
Select the correct answer using the code given below:
1
1 and 4 only
2
1, 3 and 4
3
2 and 3 only
4
2, 3 and 4
5
Answer Not Known