Researchers argue that some bacteria found in the human gut are in a symbiotic relationship with humans, called mutualism. Which of the following observations is
consistent with this argument?
A Bacteria increase the risk of cancer in humans.
B Bacteria do not cause disease in humans.
C Bacteria provide vitamins to humans.
D Bacteria and humans both use the same nutrients

answer 2 is the right one. jim should measure his snack to make sure he is using the right serving size.

exposure to hazardous carcinogens and toxic substances can cause breathing problems, such as copd and various types of cancer. it also increases the risk of heart attacks and strokes and has serious (but no less unattractive) side effects, such as aging, yellow teeth, a terrible smell and damage to the vocal cords.