प्राकृतिक पर्यावरण के चार प्रमुख क्षेत्र (परिमंडल) होते हैं। इनमें से दो वायुमंडल और जैवमंडल हैं। अन्य दो कौन से हैं?

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?