Answer:
The Economist claims that one of the main causes of the divide was the migration of young professionals from the north to work in London, whereas it is much less common for young professionals from the south to move to a northern city.
Answer:
a. three directions at ~90°
Explanation:
Galena is known for its presence in all types of rocks (igneous, metamorphic and sedimentary rocks). It is predominantly ore of lead which has a chemical configuration of PbS and lead sulfide. Also, newly severed chunks of galena display excellent cleavage in three directions at ninety degrees.
Hence, in this case, the correct answer is "galena’s cleavage is best described as three directions at ~90°"
There are 12 active volcanoes in Asia