an insoluble substance which is the main constituent of plant cell walls and of vegetable fibers such as cotton. It is a polysaccharide consisting of chains of glucose monomers
The independent variable is the type of food available.<span>The dependent variable is the frequency of each type of beak (or number of birds with each beak type)</span>
The answer would be d because limitation of models is basically about non realistic part of models that separate them from real life which is what d is saying.
The competition and threat for purple sea star when sea stars gets eaten by sharks it is basically dangerous the will need help when sea stars live in oceans the will be near others as well