Energy... *
O Flows through a system
O Cycles through a system

explanation:

okay now i don't know this but for the pints nothing else to say bye

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.

where in your body is there an enzyme that does function at a high or low ph? what is the name of that enzyme and its function?