ancient methods that were used for conservation and preservation of natural resources [like water storage facilities, ventilation system to keep the room temperature maintained

Dear student,   
Please find below the solution to the asked query   

Ancient methods of conservation of natural resources include:
1. Rainwater harvesting: It is used to collect and store the rainwater so that it can be used for some odd purposes.
2. Construction of terraces by hill farmers during cultivation
3. watershed management: It is done for management of natural resources, management of forest and ecosystem.
4. Manuring : It is still in use but was more popular in ancient times when fertilisers were not available easily.

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