If 50,000 kcals are available to an ecosystem, how many kcals are available to PRIMARY consumers?

d) center of the mid-ocean ridge

give brainleysest

sinserly,

steckh986

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.