Because it helps us understand our past, which in turn allows us to understand our present.
Answer:
A disease model is an animal or cells displaying of the pathological process that are observed in the actual human or animal disease.
Redshift happens when light or other electromagnetic radiation from an object is increased in wavelength, or shifted to the red end of the spectrum
I believe that it's called an adaptation.
Hope I helped you
Answer:
communication is not the function of skeletal system