Why do giraffes have long necks? Scientists reveal a fascinating new theory

---

Why do giraffes have long necks? Scientists reveal a fascinating new theory

---

Famously, Charles Darwin used his 'survival of the fittest' theory in the 19th century to explain why giraffes have lengthy necks. Millions of years ago, giraffes with the longest necks could reach more leaves on the trees and survive competition – before passing the long-necked trait down in their genes, the legendary English naturalist said. Now, scientists in the US elaborate on Darwin's findings with a new theory – and they think it was females that powered the evolutionary trait.
More >> https://ift.tt/atzPhV7 Full Article on Source: ANIO
#us #uk #world #fashion #showbiz #celebrity #lifestyle #top #news