The Principle of Cross-Cutting tells us that a fault must be older than the rock it cuts. Cross-cutting in geology was formulated by Nicolas Steno, a Danish geologist in the mid-1600's. It is usually used in combination with radiometric age dating, which can tell the geologist how old the rock is.
Jefferson: Louisiana Purchase , Lewis and Clark Expedition
Madison: War of 1812, British burn down the white house, Era of Good Feelings
-The US was growing as a well respected nation who was now fighting its own battles and experiencing major growth in dealing with expansion and government
Studies regarding rat learning and brain structure by Greenough, et al. (1990) and Wallace, et al. (1992) suggest that: <u>Early experiences such as learning cause physical changes in the brain.</u>
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The brain structure is composed of three main parts: the forebrain, midbrain and hindbrain, each with multiple parts.The brain is housed inside the bony covering called the cranium. The cranium protects the brain from injury.
Brains structure are made of soft tissue, which includes gray and white matter, containing the nerve cells, non-neuronal cells (which help to maintain neurons and brain health), and small blood vessels.
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Answer:
Gross National Product (GNP)
