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My Answered Questions

• how does the world know the time ?

• How many days does it take to get to the moon ?

• How do scientists know how to make a flu vaccine if viruses can be different every year?

• How do scientists know how to make a flu vaccine if viruses can be different every year?

• what made you want to Exam bacteria found in hospitals and finding out if they could cause disease?

• What made you interested in how infants respond to vaccines, and how do you find out from infants ?

• What’s the difference between bacteria and virus?

• What’s the difference between bacteria and virus?

• Why does the sun make your skin dark but your hair light?

• How do scientists know how to make a flu vaccine if viruses can be different every year?