15 years in the wild and 28 years in captivity
No. Genetics is a topic in biology. I think what you mean is, the mutations that form in DNA to give different features may be beneficial to the survival of the organism. E.g. Giraffes with long necks are more likely to survive than the giraffes with short necks because they can reach leaves on higher trees but the short giraffes can not. The short giraffes have evidently become extinct as a result.
Giraffes live in savannas and grasslands in Central Africa. GiraffesThey migrate when vegetation and water are scarce to another area where these things are more plentiful. Giraffes usually live in calving groups of about 50 individuals when there are young calves. Older giraffes protect the young and adolescent giraffes during migrations.
Tornadoes are not a very serious threat in regions where giraffes live. If and when a tornado does occur its chances of impacting any individual animal are very small. Because tornadoes are rare events there is little need for giraffes to have any particular adaptation or survival strategy for tornadoes. That said it is unlikely that a giraffe could survive a direct hit from a tornado without injury.
Yes, giraffes do have knees.
no never eat other Giraffes.
No. Giraffes are herbivores.
Giraffes can get harmed
Giraffes
A giraffes movement is walking
Giraffes are mammals.
Baby Giraffes
Giraffes are are diurnal