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sashaice [31]
3 years ago
10

Coral reefs can be damaged or destroyed by _____.

History
2 answers:
arlik [135]3 years ago
6 0

Coral reef destruction is caused of course by climate change, responsible for our warmer oceans. Corals cannot survive if the water temperature is too high. Higher water temperatures is the main reason behind the death of nearly half of the Great Barrier Reef’s corals.


Urban and industrial waste and oil pollution from shipping are poisoning reefs too – some pollutants, such as sewage and runoff from farming increase the level of  nitrogen in seawater, causing an overgrowth of algae, which smothers reefs by cutting off their sunlight.


So A, B and C are the correct answers

Harman [31]3 years ago
5 0
Coral reefs can be damaged or destroyed by "shipping" "higher water temperatures" and "<span>pollution from the land," since air pollution has very little affect. </span>
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Answer:

Between 1865 – 1914, 25 million people immigrated to the U.S.

1890s ½ the immigrants were from eastern and southern Europe . This was the cause of push and pull factors.

Push factors: Religious persecution, scarce (limited) land, famine, no jobs, wars, family already left .

Pull factors: Job opportunities, land, religious freedom, political freedom, to be with family .

As well, in 1890s immigrant made up large portions of cities’ population . Separated into ethnic groups, such as Little Italy, the Lower East Side (Jewish Quarter). The fact that they speak the same languages was also a good reason to immigrate. Newspaper access from their home country also influenced.

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The Chinese suffered severe unemployment and famine, unlike the Europeans. The Chinese often waited for weeks or months in crowded barracks before allowed into the Unites States, while the Europeans were hurried through Ellis Island .

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