Answer:
natural resource is the correct answer for the question
Ans: waterfalls are most common where hanging valleys occur. Such valleys generally form when glacier ice deeply erodes a main or trunk valley, leaving tributary valleys literally hanging far above the main valley floor. After the glaciers have melted and withdrawn, streams from such tributary valleys must fall in order
Answer:
F Anthracite (the hardest coal)
Explanation:
Coal is a sedimentary rock that is formed from plant materials. These plant materials must have been trapped and compacted in an environment where they are not able decay. Such an environment is a swamp.
The first grade of coal that forms initially in such an environment is called PEAT. Peat is soft coal that still contains some plant materials. It has a high moisture content and the amount of carbon is still quite low.
With increasing pressure and compaction, PEAT grades into LIGNITE which has more carbon atoms in it. Lignite is more combustible although it is quite soft too. Lignite grades into SUB-BITUMINOUS coal and then BITUMIOUS coal.
The highest grade of coal is ANTHRACITE which is a hard coal. It has very little moisture content and rich carbon percentage in it. Anthracite yields more energy compared to other forms of coal. Anthracite is basically coal that forms at the greastest pressure. Beyond this pressure, a metamorphic transformation occurs and the coals changes to graphite.
Based on increasing pressure:
PEAT< LIGNITE< BITUMINOUS COAL < ANTHRACITE
Answer:
sense of self-interest.
Explanation:
The given quote is taken from the book titled 'The Wealth of Nation' written by Adam Smith. The book is about the free-market economics and it's pros and cons to the economy.
In the given quote, Adam Smith is talking about that it is <em>sense of self-interest</em> that motivates people to seek high-paying jobs rather than the desire of interest of society. He asserts that people are exerting themselves to seek high-paying jobs for his own advantage than advantage to the society.
Therefore, option D is correct.
Aliens or illegal immigrants is when Mexicans cross the border illegally and can pay a hefty fine. Close to 11.6 million immigrants in the USA. They can do this for drugs, sexual things that aren't allowed in the USA or maybe just for a better and healthier life. Donald J trump is planning to build a border to prevent these things. (not saying I agree just facts and research I've gathered).
