I believe the answer is: Family
In tribal african culture, each members of the family would stick and live together even after the children grow up and got married. They would probably see the concept of leaving the parents at nursing home as immoral since they see taking care of your elders as a kind of repayment for back when they're being nursed as a child.
Answer:
فكري باجواب بتعرفيه لانه كتير سهل
Well the climate by the equator is right close to the tropic zone. And the climate close to the poles are in the arctic zone
hope it helped
Checks and balances, I'm pretty sure but sorry if I'm wrong