पौधों में राल (रेजिन) और गोंद जैसे अपशिष्ट उत्पाद मुख्य रूप से कहाँ जमा होते 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?