Scientists are creating vaccinations that prevent people from getting bird flu. If the virus mutates, a new vaccine needs to be made. The vaccine needs to be tested, which can be dangerous. It also takes a long time for scientists to know whether the vaccine works.
3)by putting in effort and hard work
Answer:
A good way to make friends is to start with people you have things in common with. If you are in a club or on a sports team that is a good place to start. Benefits of having friends is
Stronger immunity
Lower stress
Improved self-confidence
Increased happiness
Better overall health
Explanation:
Answer:
Formal operations
Explanation:
During formal operational stage adolescents<em> gain the ability of abstract thinking and its application, they can manipulate ideas in their heads without any dependance, they also begin to think creatively and can do mathematical calculations.</em>
I hope you find this information useful and interesting! Good luck!
Crusty breads is the answer
