Instead of using animals in medical expereince, i think<< that scientests could test it on bacteria or humans, if it is safe enough.
Answer: D
Explanation: uhm its pretty easy
A pulmonologist A pulmonologist is a physician who specializes in the respiratory system. From the windpipe to the lungs.
question: Are the leading cause of death for 15- to 20-year-olds are
answer: B. Motor vehicle crashes
explanation: In 2008, 2,739 15- to 20-year- old drivers were killed and an additional 228,000 were injured in motor vehicle crashes. “Motor vehicle crashes are the leading cause of death for 15- to 20- year-olds.” “In 2008, 12 percent of all the drivers involved in fatal crashes were between 15 and 20 years old.”
source: https://crashstats.nhtsa.dot.gov/Api/Public/ViewPublication/811169
have a great day fam!