Perfect competition is the type of competition that occurs in...
Pluricellular organisms are a type of organisms that are composed of...
Peter Paul Rubens was one of the most famous European artists of...
The praxinoscope is the instrument that followed after the zoetrope was...
Pole vault is a fluid and elegant sport that involves running on...
Pop art was a movement that developed in England and United States as...
Phytoplankton are all beings of plant origin that are found floating on...
The Paleozoic era also known as Primary Era, is the...
Percussion instruments are the instruments that produce a sound when...
Pascaline was the first calculator invented in the world, it worked...
