Answer:The shape is a double helix but its kinda like a twisty ladder.
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The thorasic vertebrae is connected to the ribs and the are different from other vertebrae in that it has facets on each vertebral body with is joined to the head of the rib.
The connective tissues of mammalian brain is called the meninges. There are three layers of this tissue. The outer layer is called the dura mater. The arachnoid is the middle layer and the pia mater is the inner layer of it.
Answer: Such constant change has characterized Earth since its beginning some 4.5 billion years ago. From the outset, heat and gravity shaped the evolution of the planet. These forces were gradually joined by the global effects of the emergence of life.
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