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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Haustoria or sucking roots are found in which of the following?
Who developed the theory of Evolution?
Which of the following are the smaller planets than the size of the Earth?
What is formed when Magnesium is burnt?
What is the mean temperature of Earth?
Mars is the _______ planet from the Sun.
Which of the following metals is stored in kerosene oil?