Because mostly some microorganism may be very small and harmful that can affect humans or animals just by the experience of the microorganism.
Elliptical paths is wrong im trying circular paths b/c elliptical paths are circular
The duodenum can therefore be subdivided into four segments: the superior, descending, horizontal, and ascending duodenum. ... The three regions of the small intestine are the duodenum, jejunum, and ileum. The jejunum is about 0.9 meters (3 feet) long (in life) and runs from the duodenum to the ileum.
Answer:I think it is A DNA molecule 5
sorry if I am wrong
