Which was NOT a cause of the Dust Bowl?
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Uranus is the _______ planet from the Sun.
What is the mean temperature of Earth?
First man to go into space was
Milbecycin is used in the eradication of _____.
Why do the plant closes stomata when it does NOT need carbon dioxide for photosynthesis?
What is the accepted average Calorie requirement for rural area in India?
Which of the following is the treatment of water pollution?