Saved Bookmarks
| 1. |
Why hove the giraffes |
|
Answer» With such longnecks,giraffesspend a lot of time moving their heads from down low to up high, and so theyneed a way to keep blood flowing to the brain so they don'tgetwoozy. Scientists once thought that vessels in thegiraffe's necksiphoned blood from the heart to the brain. |
|