Hi,
Scientists have used rock samples to date the Earth's past. They also might use Steno's principles.
Relative dating is the determination of the age of a rock or geological event by comparing with other rock/ geologic events. Absolute dating is a form of geologic dating that gives an actual date or age in history that the item was formed or died in years.
Steno's principles are:
Law of superposition - Bottom layer is the oldest, top layer of the youngest In undisturbed layers of sedimentary rock or magma.
Original horizontally - When sedimentary rock layers form, they are "created in a horizontal form.
The Principle of Lateral Continuity -<span> States that layers of sediment initially extend </span>laterally<span> in all directions.
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Answer:
Use the map to answer the question. On a world map, countries with Proctor and Gamble facilities are shaded green. The largest sections of green on the map include North America, Australia, most of South America, most of Western Europe, several countries in Asia, and a few countries in Africa. Which of the following is a conclusion about this corporation that can be drawn from this map? A. This corporation promotes hierarchical diffusion from the United Kingdom, the United States, and China. B. This corporation relies on stimulus diffusion to expand its influence and profitability. C. This corporation’s resource acquisition is centered in North America. D. This corporation’s manufacturing operations affect all regions.
Explanation:
Answer:
Pinochet assumed power in Chile following a United States-backed coup d'état on 11 September 1973 that overthrew the democratically elected socialist Unidad Popular government of President Salvador Allende and ended civilian rule.
Explanation:
The dictatorship was established after the democratically-elected socialist government of Salvador Allende was overthrown in a coup d'état on 11 September 1973. During this time, the country was ruled by a military junta headed by General Augusto Pinochet.
The genocide happened in Rwanda, you are correct.
Answer: 
Explanation:
The Tropic of Cancer is one of the parallels (imaginary line around the Earth parallel to the equator) located in the northern hemisphere (currently its latitude is 
).
It is called "Cancer" because a long time ago, when the summer solstice occurred in the northern hemisphere (on June 20th or 21st), the Sun was in the constellation Cancer (the crab).
Now, if we were just in the North Pole, Polaris would by exactly over our heads (
over the horizon), but as we go south and find the Tropic of Cancer parallel, Polaris altitude will be approximately at an angle of over the horizon.
Hence, the altitude of Polaris measured by an observer at the Tropic of Cancer is .
