Answer:
1. Cervical
2. Lumbar
Explanation:
Spinal enlargements are the conspicuous regions in the spinal cord from where spinal nerves to and from limbs exit and enter respectively. Cervical enlargement is also called the superior enlargement. It starts from C4, the fourth cervical vertebra and extends to T1, the first thoracic vertebra. Cervical enlargement is the site from there the nerve that supplies to and come from the upper limbs arise.
Another enlargement is the lumbar enlargement. It is also called inferior enlargement or lumbosacral enlargement and extends from the ninth to the twelfth thoracic vertebra. It is the site from where the nerves to and from the lower limbs arise.
Reason is humans have not yet completed demographic transition
According to the image above, I believe the answer would be D. Water Quality!
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Electron Transport Chain (ETC) produces the most ATP. ETC produces 36 ATP. Pyruvate Processing produces 2 ATP. Glycolysis produces 2 ATP. Kreb's Cycle produces 2 ATP.
