एक किसान फसल की उपज बनाए रखते हुए जैविक नियंत्रण के माध्यम से रासायनिक कीटनाशकों के उपयोग को कम करना चाहता है। उपायों का कौन सा संयोजन सबसे उपयुक्त है?

The 'Drain of Wealth' theory was propounded by which Indian nationalist leader?

Which event is considered the turning point in Mahatma Gandhi's leadership in the Indian independence movement?

Which African leader is known for his non-violent opposition to colonial rule?