Why do you think giraffes have such long necks? how do you think this happened?

Giraffes may have developed such long necks over the time of their evolution as a distinct animal species. It may have been a result of adapting to an environment ( they live in savannas, woods, and forests in Africa ), and increased their chances of living longer. It may have helped them in everdag survival for example, if they lived in areas with very tall trees their long necks would have made it easier to kill prey for food or even to fight their competition.

Where are they though?

There are no negative consequences to using nuclear energy.  false. how is the   the hydrogen bomb relies on the process of nuclear fission. true.