Answer:
The third option is correct.
Hope this helps.
The myelin sheath is the layer of fat cells that insulates most axons and speeds up the transmission of nerve impulses.
Holism.
Explanation:
Anthropology is the branch of scientific studies that deals with study of human development in terms of body structure, culture,social behavior and language.
Biological anthropology deals with the evolution of man on the basis of biological structures.
Cultural anthropology deals with the evolution of different culture and society.
Social anthropology deals with the evolution of various societies from the time when man was totally uncivilized.
Linguistic anthropology deals with the study of evolution of languages.
In short anthropology deals with all the aspects of human beings. This commitment of anthropology to studying the entire picture of human life,including culture,biology,history and language is termed as Holism.
They are formed by natural processes like anærobic decomposition. They contain energy from ancient photosynthesis. They can literally be around 650 million years old.
Metabolism (aka basal metabolic rate)!
How I remember this is the amount of energy someone in a coma would need to maintain a healthy weight
Hope this helped!
~Someone who loves Shawn Mendes very much
