The weather conditions as a limit on population growth because It's too cold, dangerous, and isolated. Same with the weather conditions in the dessert, except its bloody hot.
You need space to grow of course.
Also, food is a necessity. Limit on food is dangerous, you need a lot of food to feed a big population.
Sun light is the best answer in my opinion. Hope this helps!
Explanation: Ionic bonding is the complete transfer of valence electron(s) between atoms. It is a type of chemical bond that generates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion.
