<span>The earliest methods of medical pain control for childbirth required the mother to be deeply sedated, a state known as general anesthesia.
General anesthesia is used to induce a state of unconsciousness, which is controllable. In that state you are unable to feel any pain. General anesthesia can be used intravenously or inhaled.
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Answer:
by providing healthy nutritional source and put them in pure culture
Carbohydrates help to give energy to the body
Different life forms adapt to their environment. Stable ecosystem creates a stable environment for life forms. In stable environment, life forms do not have to adapt all the time and their energy can be invested into other life processes, such as growth, reproduction, etc. Stability of ecosystem is important for adjoining ecosystems because that way boundaries and influences could be extended. Stable ecosystems are able to interact and both benefit from each other.
The signal will start from the eyes. The message is carried by sensory neurons to the spinal cord. There, the "impulse" will transfer to motor neurons which will carry it to the brain. So in short:
Sensory neurons --> spinal cord --> motor neurons --> brain
