पैरामीशियम जैसे कुछ प्रोटोजोआ में निम्नलिखित में से कौन सी संरचना रक्षात्मक तंत्र के रूप में कार्य करती 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?