8. How does the author develop the idea that the causes of the flu are still a mystery? (RI.1.2) a. Scientists do not know how the flu is passed from birds to pigs to humans.
b. Scientists keep trying new techniques to increase the production of antibodies.
c. Even with the advances that have been made, the vaccines do not work all the time.
d. The scientists are sure another worldwide outbreak will never happen again.

recent brain research has shown some surprising benefits as a result of formal musical training. learning to play a musical instrument appears to develop parts of the brain that can even influence academic results. the studies indicate that the earlier a child begins training, the more benefits there are. one such study showed that children who began musical studies before the age of seven had a more developed brain in the region where language production and auditory processing take place. scientists believe there is mounting evidence to show that early musical training can improve brain function.

explanation:

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