Continental drift is the geological phenomenon in which continents move. These movements at speeds of a few centimeters per year can actually be measured since the advent of satellite geodesy. The movement of continents is caused by plate tectonics.
Alfred Wegener noted at the beginning of the 20th century that the edges of some continents (particularly South America and Africa) are similar in shape, concluding that the continents were connected and separated before. The problem was that it was not known how huge land masses could move across the Earth's surface. Such a movement requires enormous power and it was not known where it came from.
Later it was known that, according to plate tectonics, the continents move as a result of convection currents in the mantle. They slowly move away from each other, bump into each other, slide under each other, or rub against each other. This causes various surface phenomena, such as earthquakes, volcanism, and slow changes, such as subsidence, mountain building and the displacement of continents.
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Answer:
B, C, D, E, A
Explanation:
1. The Third Punic War (The third Punic war was known as the last of the Punic Wars and occurred between 149-146 BCE)
2. Tiberius Gracchus is assassinated for trying to establish land reform (Tiberius was assassinated in June 133 BCE for trying to help poor farmers to establish land reforms. He was killed in the riot that resulted)
3. Gaius Marius reforms the Army (This reform was known to be implemented in 107 BCE by Gaius Marius)
4. The revolt of Spartacus and his fellow slaves (Spartacus and his fellow slaves revolted in 73-71 BCE and remains the most successful revolt from slaves in Rome's history)
5. Julius Caesar becomes dictator (Caesar was first appointed dictator in 49 BCE, with the aim of presiding over elections. He resigned after 11 days)
Answer:
First-hand ethnographic fieldwork
Explanation:
Ethnography is the detailed account of a society and its culture by observing the social interactions that people have. This gives us an accurate description of a society and its culture as it not influenced by outside factors.
Here, Maria is studying the the lives of women in coffee farming communities in Brazil. She is observing them directly and making sure her presence does not influence their interactions. She is also doing this herself which means her research will not be affected by someone else's perspective.
Hence, she is using the strategy of first-hand ethnographic fieldwork.
Answer: principle of least interest is the correct answer.
Explanation:
