The lining of the spinal cord is called the "Dura". Dura is a meninge which is the top layer of protective covering for both the brain and the spinal cord.
Answer:
Explanation:
Considering the atmosphere of the primitive earth to have contained water vapor, carbon dioxide, carbon monoxide, methane, and ammonia and/or nitrogen, then in the presence of an energy source, such as sunlight or lightning, a number of small molecules like hydrogen cyanide, HCN, are formed.
Answer:
D all of the above
Explanation:
a - provide protective covering on the land to prevent soil erosion
b - provide shade, protect from wind and help moderate the temperature
c - animals can't make their own food, so they depend on plants for supply of food
Therefore, the answer is D all of the above.
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Layers of fossils in pillars, the rock covering them is dated and we get an exact time of each layer.
