The nervous system helps keep homeostasis in breathing patterns. Because breathing is involuntary, the nervous system ensures that the body is getting much needed oxygen through breathing the appropriate amount of oxygen. When toxins get into your blood, they disrupt your body's homeostasis.
Answer:
1. Surplus of food
Explanation:
In order to build a a society, the very first thing that human civilization need to do is find a way to settle in an exact same place for a long period of time. This could only happen if we have a surplus of food in that area.
Without it, we need to be a nomadic group. This require us to move from one place to another while seeking new source of foods. In such situation, we wouldn't have enough time to slowly develop our traditional tribes into a modern society.
I’m not for sure, but I’m pretty sure it’s mental because your brain determines what you like and how you act/feel
Fetal Hemoglobin C. has a higher affinity for oxygen than does adult hemoglobin
Please, mark me the Brainliest <3