Answer: Interventional Study
Explanation: When a treatment group is compared to standard (control) group it is called Interventional Study
no direction
because its electric so there is no smoke produced
if someone is smoking the it will move in south direction xD
Answer:
The correct answer is E. Discovered "the transforming principle" that could genetically alter bacteria.
Explanation:
Oswald Avery, Colin MacLeod and Maclynn McCarty experimented with pneumococcus and suggested that DNA (rather than protein as believed at the time) may be the hereditary material of bacteria, and could be analogous to genes in higher complexity organisms.
