The answer to this is vitamin A. And vitamin A is really important because it helps your eyes, which is the reason why many people in 3rd world countries who don't get enough vitamin A are prone to being blind. Hope this helps!
The relation between the religion and politics continue to be important despite the need for the separation of the church and state. Religion plays a role as it make claims on people's allegiance and making these claims on all people rather than a specific community. Politics on the other hand also influences the belief of people as exercising their right to choose for political leaders.
Describing how the body protects the immune system: The immune system produces cells which we call the antibodies they exist to protect your body from a specific invader these antibodies are developed by cells called the lymphocytes
My depend on if their eating habits are the same and if not then that could be one reasoning
