Answer:
c. Chemical weathering
Explanation:
One of the famous landmarks in New York City is "The Statue of Liberty." It was built in<em> 1886</em> as a gift to the Americans from France.
The statue is covered with<em> copper sheets</em>, thus, it used to have a brown color. However, over time, the color turned into greenish-blue. This is because<u> the copper sheets underwent chemical weathering</u>. Such process occurred as a result of the reaction of copper with Oxygen in the air and with water. It produced<em> "copper carbonate,"</em> which is<em> greenish-blue</em> in color. Such color was noticeable in<em> </em>1900<em>, </em>but it covered the entire statue in <em>1906.</em>
In 1998, Canada's highest court declared that Quebec could not legally secede.
Explanation:
Canada is the second largest country in the world. In order for the vast territory to be easier for governing, Canada is divided into provinces and territories. Such provinces and territories in Canada are:
- Quebec
- Ontario
- Alberta
- Manitoba
- British Columbia
- Saskatchewan etc.
While most of the provinces and territories have nothing against being in the borders of Canada, there is one that opposes it, that being Quebec. Quebec is one of the provinces that contributes the most to the GDP of the country, is one of the most populous, and has an excellent location.
This province doesn't want to be in the borders of Canada though, but instead wants to be independent. The main reasons for that are that the majority of the people of Quebec have different ethnic and cultural background than the rest of the provinces and territories. While the people of Quebec already had several referendums about independence, with the majority of the population voting for it, the Canadian highest court declared any attempts for seceding of Quebec illegal in 1998.
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Answer:
An analysis of 5,000-year-old genetic material from preserved human remains found in Sweden suggests that people moving from southern to northern Europe spread agriculture across that continent long ago.
In addition to agricultural know-how, the intrepid farmers brought their genes: They interbred with hunter-gatherer communities to create modern humans living in Europe today.
"Genetic variation of today's Europeans was strongly affected by immigrant Stone Age farmers, though a number of hunter-gatherer genes remain," study researcher Anders Götherström, of Uppsala University in Sweden, said in a statement.
The results of this study, to be published in the April 27 issue of the journal Science, match up well with previous archeological evidence of farming in Europe.
Explanation:
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