The expression relates to a concept in Economics know as "creative destruction". This concept describes a process in which industries based on old technology are replaced by industries based on new technology, and with a better result for everyone overall. In this case, the Stone Age ended because stone tools were replaced by bronze tools, and thus began the Bronze Age. When industries seek protection against new competitive technologies, this expression is used to point out that regulation providing protection is not in everyone's best interest.
Quarrying is a very lucrative business. The stones obtained from quarrying are used for a number of applications, notably that of road construction and making concrete.
Economic problem in essence is the problem of scarcity of resources in comparison with human wants. In everyday life, we encounter many economic problems, poverty, unemployment, inflation etc, but if we start analyzing them, we will find that every problem has it's roots in the fundamental problem of scarcity of resources. Scarcity forces choices in consumption and production of goods. Scarcity creates conflicts. Scarcity means that not every body is getting everything he wants and there will be losers and winners. Scarcity arises because of two underlying conditions: Physical condition, that is, limited productive resources and a mental condition that is , unlimited wants. Physical limits do not alone-establish scarcity-in an economic sense. It is the human wants which make resources insufficient. Wants are unlimited, people want much more than just necessities. So the bitter fact is economic problem is permanent.
Rocks and Stones..
Your answer depends on the quantity of diamonds you want to import, the country in Africa from which you want to import the stones, the country into which you want to import the stones and the duty regulations involved.
Gem-quality diamonds represent only about 20% of all diamonds mined. Because diamonds are valued according to their clarity, colour, carat weight and cut, the higher-quality gem stones command millions of dollars.
"These," because "stones" is plural.
from the economic point of view you can use them as building stones or as sources of minerals
Because it likes to eat stones and it lives on stones!
Because they have a bluish tinge to their colour.
chestnuts are fried with small stones because the chestnuts need the small stones to get rid of germs. besides, it need the smell. (those are not normal stones)
*because of kidney stones
There are 66 stones on his grave because he died at age 66.
they used sharp stones. Humans were in the Stone Age at the time. Because of that, they used stones. They sharpened the stones with other stones. These prehistoric people were very reliant on their stones. using thier stones they could kill the tiger and use the fur and meat.
Because of sand clay and stones.
It can because of dehydration
Because of sand clay and stones.
"great" is the predicate adjective, because it renames the subject, "stones". Stones=great. I hope this answers your question.