The game of association football, also known as soccer or football, is a team sport with 11 players on each side of a spherical ball. It is played in over 200 countries around the world, and has 250 million players.…
Day: February 16, 2022
The Physiology of Birds
The Physiology of Birds Birds are warm-blooded vertebrates of the class Aves. They have large, strong bodies, feathered wings, toothless beaks, and hard-shelled eggs. They have four chambers in their hearts and strong, lightweight skeletons. Although birds have different physiologies,…