Do you Know the Names of these Foods in other Languages? > 커뮤니티 카카오소프트 홈페이지 방문을 환영합니다.

Cachel says that the one heart/two lungs system started to emerge about 300 million years in the past, when animals first moved from sea to land to escape predators and find new sources of food.

The organ programs we find in most animals include one heart and two lungs. Cephalopods have three hearts (two to send blood to the gills, therabreath travel kit and one to ship blood to the remainder of the physique) and no lungs. That's, with the exception of earthworms and cephalopods -- the invertebrate class which incorporates octopi and squid.