im pretty sure the answer is C let me know if its wrong dont give me brainiest
The answer to the question is PCR
a because the marble changed its position quickly meaning that it was in motion
I would say D. small intestine
If you want an explanation, here it is
After leaving the stomach, water is absorbed mostly in the early segments of the
small intestine, the duodenum, and the jejunum. A small portion of all water absorption occurs in the stomach and the colon: the small intestine absorbs 6.5L/day, whereas the colon absorbs 1.3L/day.