what two organ/body systems and state some of their main organs (structures) and how they interact within the body and with each other to keep the organism healthy.

they absorb it i think

not sure

you

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.

it is called the mitotic spindle