The correct option is: "Londoners developed breathing problems due to the smog. - Coal mines polluted the surrounding environment."
Coal was the main source of energy for the first Industrial Revolution, fueled the steam engine and was crucial in the steel industry. Until the industrial revolution, the most used energy came from wood and charcoal. Its consumption was producing a huge deforestation.
Although the operation of the mines (iron beams to support the galleries, methods of ventilation, methods to extract the water, use of trolleys on rails) was greatly improved, in order to increase the productivity, the work in them became something very dangerous and very painful.
The Industrial Revolution in the mid-eighteenth century caused many people to move from the villages to London, shooting the smog during the winters. Its high point came in the winter of 1952. London was paralyzed for five days by smog.
"<span>It had skilled astronomers" is the best option from the list, since back in these times, astronomical accuracy was necessary in order to be able to accurately predict the movement of the sun and moon and therefore the dates and times.</span>
Answer:
The correct answer is B.
Explanation:
The answer is self-explanatory. That is the order in which events occurred.
The correct answer for this question would be BBC Pips Greenwich Time Signals.
The another name for the hourly time signal or GTS first broadcast by the RGO in 1924 is called BBC Pips Greenwich Time Signals. For 75 years the major global news headlines of the day have been preceded by the six Greenwich Time ‘pips.
Explanation:
There are six pips (short beeps) in whole, which happen on the 5 seconds heading up to the hour and on the hour itself. Each pip is a 1 kHz tone the first five of which do a tenth of a second specific, while the final pip lasts half a second.
When a leap second happens (it is indicated by a seventh pip. In this case, the first pip occurs at 23:59:55
Radio broadcasting wasn't different when the Marconi Company commenced its innovative syncromeshed in 1922. The company had been displaying from its base in Chelmsford since 1920, and on the other side of the Atlantic scheduled broadcasts (from station XWA in Montreal) had commenced in May that year .
One of the main reasons why Virginia finally ratified the constitution was because a "Bill of Rights" was added to the Constitution which helped ensure that the new government would not impede the most fundamental human rights of the citizens.
