जानवरों, वनस्पतियों एवं सूक्ष्म जीवों के अवशेष (जीवाश्म) मुख्य रूप से किस प्रकार की चट्टानों में पाये जाते 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?