Answer:
The event is known as the Trail of Tears
Explanation:
In 1830, congress passed the Indian Removal Act. This law allowed then-president Andrew Jackson to remove the native indian populations of the Southeastern United States, to a new territory in Oklahoma, known as the Indian Territory.
Over 30thousand people belonging to the tribes mentioned in the question were obliged to abandon their homelands, and move westward. During this event, a lot of them died of diseases and starvation. This sad reality is the reason why it has come to be known as the Trail of Tears.
The major environmental concerns in Oceania and Australia re the overfishing and the invasive species.
Explanation:
Australia and Oceania, as pretty much every place in the world, have some big environmental problems. Unlike the rest of the world, this region doesn't really have problem with deforestation, but it has big problems with overfishing, as well as with invasive species. The overfishing and the invasive species combined, manage to create huge problems, especially when it comes to the protection of the native species and keeping their numbers stable.
The overfishing has occurred because of the higher demand for fish. It is not just the local population that uses the fish extensively in its diet, but also there is huge demand worldwide, so lot of fish is actually for export. This has resulted in badly damaging the fish populations, and bringing some species on the verge of existence. The invasive species, have been brought in order to solve some problems, especially when it comes to food supply for the humans, but it turned out that they are fatal toward the local flora and fauna. Species like the cat, fox, camel, pigs, have managed to outcompete the indigenous fauna and lead to its endangering.
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Answer:
D vulnerable to attack from warring civilizations.
Explanation:
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Answer:
d. Temperate regions have weak thermoclines (moderate in summer, less in winter)
Explanation:
The theromoclines and how strong they are are crucial for the movement and exchange of nutrients between the surface waters and the deeper waters. The nutrients are mostly found in the deeper and colder waters, so they only reach the surface and shallower waters when the thermoclines are weaker. With the movement of the nutrients toward the surface waters, they provide nutrition for the marine organisms, resulting in much larger populations and much more species to be present. The temperate regions are the ones where the theromoclines start to become weaker because the waters become cooler, especially in the winter when the temperatures are much lower and the waters become colder as well.
Answer:
Mercury has the widest variation in surface temperatures between night and day of any planet in the solar system.
Explanation:
