The method of soil conservation in which different crops are grown in alternate rows and are sown at different times to protect the soil from rain wash is called?
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Concentration of water vapour in troposphere is
When warm air rises up and cold air from the surrounding areas rushes in to fill its place then this sets up ________________ in air.
The Incident Command System (ICS) is
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Aluminium oxide is ___ in nature.
The percentage of carbon in CO2 is
Which of the following elements replaced eka-Aluminium in Mendeleev's Periodic table?
Mount ST. Helens is an 'active stratovolcano' located in ____.