Bacteria that feed off of food in the human gut and provide essential nutrients to their host are an example of
Commensalism
competition
mutualism
parasitism
predation

mutualism

Explanation:

They both are beneficial towards one another

mutualism

Explanation: both benefit, the bacteria feeds off host and the host gets nutrients

type 2 happens when excess consumption of high-sugar foods flood the blood supply with glucose and reduce the production and effectiveness of insulin. if a person has prediabetes, they can reduce the risk of full diabetes through regular exercise and a balanced, low-sugar diet.

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.