The Arteries carries the blood away from the Heart. And the Vein brings the blood back to heart.
From single-celled ancestors, they evolved into a riot of complexity and diversity. An estimated seven million species of animals live on earth today, ranging from tubeworms at the bottom of the ocean to elephants lumbering across the African savanna.
The probability of a child with the phenotype of A will be 25%
It is called desert animal survival thats the adaption
