Category: Media

How parrotfish make sand?

Score: 5/5 (2 votes) The famous white-sand beaches of Hawaii, for example, actually come from the poop of parrotfish. The fish bite and scrape algae off ...

For an object falling freely?

Score: 5/5 (4 votes) An object that is moving only because of the action of gravity is said to be free falling and its motion is described by Newton'...

What kind of wood is okoume?

Score: 4.4/5 (22 votes) This is the commercial name for timber that comes from the tree Aucoumea klaineana, an African hardwood also known as “Gaboon” or...