Answer:
(C) anterior spinothalamic and posterior columns.
Explanation:
The anterior and posterior spinothalamic columns are sensory tracts found in all segments of the spinal cord, the first are motor and the second sensory.
The anterior column has a large number of neurons in the cervical and lumbosacral regions, in these regions the anterior columns present two groups of neurons, the medial group (for the proximal limb muscles) and the lateral group (for the distal limb muscles). .
The posterior column receives sensory stimuli. The different sensory categories reach the posterior column at certain points. At the apex of the posterior column the afferences are from the spinothalamic tract for pain modulation (area known as gelatinous substance).
Answer:
Humans first evolved in Africa, and much of human evolution occurred on that continent. The fossils of early humans who lived between 6 and 2 million years ago come entirely from Africa. Most scientists currently recognize some 15 to 20 different species of early humans.The first true primates evolved by 55 million years ago or a bit earlier, near the beginning of the Eocene Epoch. Their fossils have been found in North America, Europe, and Asia. They looked different from the primates today.
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Answer: The chemical equation for photosynthesis is 6CO2 + 6H2O + sunlight --> C6H12O6 + 6O2
Explanation: In the above equation, CO2 is carbon dioxide, H2O is water, C6H12O6 is glucose and O2 is oxygen. In this reaction, six molecules of carbon dioxide react with six molecules of water in the presence of sunlight to produce one molecule of glucose and six molecules of oxygen.
Answer: No I read it on briticanna.com
Explanation:
8 km per hour. At that rate, he will walk 8000m in 1.0 hours. 1km = 1000m, 8000/1000 = 8. Would appreciate brainliest!