Answer:
Methane is found deep in the Earth's crust, which makes it difficult to harvest
Explanation:
According to the Scientific American: <em>"With drillers tapping into massive stores of natural gas across the United States, scientists are researching ways to capture it more effectively"</em>. On the same article, you can find that: <em>"Energy companies are looking for a cheap way to separate these gases to yield a pure methane stream"</em>. So it is hard and expensive to harvest methane, even though drillers keep finding it.
a flexible form of armor composed of many small iron rings was called mail
Chain Mail.
Answer:
The Elastic Clause of the United States Constitution, inserted in its Article I, Section 8, empowers the federal Congress to take the measures and carry out the necessary actions to guarantee the normal performance of its explicit powers, that is, those that are written in the Constitution. Thus, the Elastic Clause expands the powers of Congress.
Now, many prerogatives of Congress are found in the text of the Constitution itself, which does not arise from the Elastic Clause. A clear example of this is the power to declare war, or the power to establish lower courts than the Supreme Court.
D is the closest to the correct (or all encompassing) reason for the failure of Pickett's Charge at the Battle of Gettysburg.
The Rebel soldiers had to travel across a field that had a variety of fences (think farmland) on it. This meant that there were a number of funnel points where the Union soldiers could direct the fire, creating kill zones.
Additionally, the Rebel artillery was not very good and did not soften the Union lines to enable the Rebel soldiers to break through upon making it across the farm fields.
Answer:
C. a big party where everyone in the town would help to build a person's house
Explanation:
Typically, house-raising is more popular in rural community and almost never happen in Urban Area. In most cases, it's held to help out the neighbor who somehow experiencing some unfortunate disaster (House broke down because of flooding, burned because of gas leak, etc)
The materials used in house-raising usually came from the environment around the neighborhood. In United States , house-raising is most common in states such as Louisiana and Vermont.
