Exponential population model is appropriate when we have unlimited
reepurces. This often may not be available and then we use the logistics population model, That model is more realistic.

Upper models describe that no matter how small the population is at the beginning it will always grow, for small populations in nature this often may not be the case, this is when the Allee population model steps in. Some populations can be too small to grow no matter what, and they tend to go extinct.

Upper models describe that no matter how small the population is at the beginning it will always grow, for small populations in nature this often may not be the case, this is when the Allee population model steps in. Some populations can be too small to grow no matter what, and they tend to go extinct.