एक पारिस्थितिकी तंत्र में, खाद्य श्रृंखला में ऊर्जा का प्रवाह एकदिशीय होता है, आमतौर पर:

The Dandi March, also known as the Salt Satyagraha, was led by which influential leader?

Which act formally granted independence to India, marking the end of British rule?

Who was the key figure in establishing the Indian National Congress?