South American and Nazca tectonic plate boundary;
The boundary between the South American and the Nazca plates is a vibrant one. These two plates have the same density, so they collide and lift the land upwards, which is why the Andean Mountain Range formed. Occasionally there are earthquakes and they can be very strong. This is a convergent boundary.
Indian and Eurasian tectonic plate boundary;
The tectonic between the Indian and the Eurasian tectonic plates is also a convergent one, where we have two tectonic plates with the same density pushing against each other, and thus lifting up the land, which is how the Himalayan Mountain Range was formed. The earthquakes are relatively rare, and are of different velocity.
Pacific and North American tectonic boundary;
The border between these two plates is a a convergent one as well, but the Pacific plate has a smaller density than the North American one, so it is subducting underneath it. This brings in a very big geological activity, so there's multiple volcanoes and volcanic activities, as well as a big amount of earthquakes.
Answer:
Answer: Plains occur as lowlands along the bottoms of valleys or on the doorsteps of mountains, as coastal plains, and as plateaus or uplands. ... Plains may have been formed from flowing lava, deposited by water, ice, wind, or formed by erosion by these agents from hills and mountains.
When the business is losing money.
The Rust Belt is an informal region referring to a an area that has experienced dramatic decline in its industry.
Explanation:
The Rust Belt is an area, or rather informal region in the United States. It has nothing to do with the climate characteristics of the area, but it got its name because of the drastic decline of the industry. This ''region'' is not only occupying territory in the northern Midwest, but it stretches as east as New York, and as west as Wisconsin.
Staring from the 80's, a belt like area along the northern part of the United States started to have sharp decline in its industry. The once powerful industrial centers suffered greatly, as the decline of the industry had major impact on the economy, lot of population moved out, and the places stagnated or even degraded. The most affected area was the Great Lakes region. The states where the ''Rust Belt'' goes through are:
- New York
- Pennsylvania
- West Virginia
- Ohio
- Indiana
- Michigan
- Illinois
- Iowa
- Wisconsin
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Answer:
C). Corundum
Explanation:
Corundum is a crystalline type of aluminum oxide that usually contains iron, titanium, vanadium and chromium traces. Corundum is an incredibly durable and hard material. It is the third hardest mineral, after moissanite and diamond.
A geologist determine that a sample of a mineral can’t be scratched by a steel naill but can be scratched by a Masonary drill bit. Based on this information, the sample mineral has to be softer than CORUNDUM.
Due to Corundum's hardness , it can scratch almost every other mineral, and Since corundum is harder than the drill bit of masonry that can smash the mineral sample and thus the mineral sample must be softer than corundum.
