Question

short answer question.

7. Why do farmers use a combination of
manures and chemical fertilisers in fields?


8. How can pests be controlled?​

Answer 1

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Answer 2

7. Farmers apply nutrients on their fields in the form of chemical fertilizers and animal manure, which provide crops with the nitrogen and phosphorus necessary to grow and produce the food we eat. ... Fertilized soils, as well as livestock operations, are also vulnerable to nutrient losses to the air.

8. In agriculture, pests are kept at bay by cultural, chemical and biological means. ... Control of these pests is attempted through exclusion, repulsion, physical removal or chemical means. Alternatively, various methods of biological control can be used including sterilisation programmes.