Question

1. Visit any farm or park of your locality. Interview the farmers or gardener and find out the following information related to the agricultural practices followed by them – Selection of seeds, agricultural implements used, use of manures / fertilizers, irrigation method etc. Compile this information in the project file. Take photographs and paste in file

Answer 1

Explanation:

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Organic farming is an agricultural system which originated early in the 20th century in reaction to rapidly changing farming practices. Certified organic agriculture accounts for 70 million hectares globally, with over half of that total in Australia.[1] Organic farming continues to be developed by various organizations today. It is defined by the use of fertilizers of organic origin such as compost manure, green manure, and bone meal and places emphasis on techniques such as crop rotation and companion planting. Biological pest control, mixed cropping and the fostering of insect predators are encouraged.

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Answer 2

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Length and complexity of the food chain vary greatly because same organism can be consumed by two more other kind of organism. Generally in a terrestrial food chain three to four levels can be present.