Explain why the last two cases are not reasonable ecological models. That is$,$ what ecological assumption of the model causes the last two cases to yield unreasonable results $($you may end up with a blank graph if you use Desmos. In such a case, switch to Matlab or Python$)?$ To answer the question, you may need to use the definition of R as well as the max and min value that the birth rate and death rate can take $($see your answers to point $2)$