<p><strong>1. Which mammal is known as laughing Fish?</strong></p> <p><strong>Ans. Dolphin</strong></p> <p><strong>2. Einstein published the Special Theory of Relativity in:</strong></p> <p><strong>Ans. 1905</strong></p> <p><strong>3.  Which were the first organisms?</strong></p> <p><strong>Ans. Prokaryotic</strong></p> <p><strong>4. Who was the Russian scientist to