Date : Mar 25 , 2020 | Image Credit : Wikimedia Commons
Researchers have discovered that a worm is the oldest ancestor of animals including humans. It lived 555 million years ago. ‘Ancestor’ here refers to an […]
Adjective | graj-oo-uhl
taking place, changing, moving, etc., by small degrees or little by little
The mayfly is the shortest living animal on Earth. It has a lifespan of only 24 hours and completes its life cycle within one day of its birth.