To get a better yield,Jaikishan increased the use of pesticides and fertilizers. Though in the initial years he got higher yield,after that,it declined. He was much worried. His friend Mahesh persuaded him to abandon this practice and start using organic manure.
$(i)$ Why are fertilizers used in a field?
$(ii)$ State the possible reason for the decline in yield.
$(iii)$ List two values shown by Mahesh.

(N/A) $(i)$ Fertilizers are used in a field to replenish the soil with specific essential nutrients like nitrogen,phosphorus,and potassium,which are required for plant growth.
$(ii)$ The decline in yield is likely due to the continuous use of chemical fertilizers,which can destroy soil fertility by killing beneficial soil microorganisms,reducing the soil's organic matter content,and altering the soil $pH$.
$(iii)$ Two values shown by Mahesh are: $1.$ Scientific temper (awareness of sustainable practices) and $2.$ Concern for others (helping a friend in need).