I believe the answer is: catgut tied to crude metal wires
The catgut is made by the intestines of mammals such as horse or sheep. Ancient Egypt was among the first one to use this method in order to preserve the teeth.
For wealthier citizens, they might use a more expensive metal for the braces. The Etruscans for example use gold as a form of brace in order to prevent tooth collapse.
Answer:
shown below
Explanation:
reaction to Hope Hicks positive coronavirus test?
a. Trump's announcement came hours after he confirmed that Hope Hicks, one of his
longest-serving aides, had been diagnosed with the virus October 1.
b. Hicks began feeling mild symptoms during the plane ride home from a rally in Minnesota
on September 30, said an administration official.
c. Hicks had been with Trump and other senior staff on flights to that rally. She also
accompanied Trump to the September 30 presidential debate in Cleveland, Ohio, along
with members of Trump's family.
d. Questions remain about why it took so long for Trump to be tested and why he and
others continued their activities after Hicks fell ill. Trump traveled to New Jersey on
October 1 for a fundraiser, exposing attendees to the viru
Answer: Discount rates are used to determine today's value of money paid or received at some future time.
This calculation is used in the cost-benefit analysis in order to place all economic flows of a project that occur at different points in time into a single year currency so that costs and benefits can be compared.
The rates used are typically around 10%, but try to analyze them with other rates between 5% and 15% to determine if the viability of the project is sensitive to the discount rate. It is defined by World Bank or the government of the country concerned.
<u>Marginal Costs & Marginal benefits in a choice you made.</u>
Assume that I want to buy an ornament for hands. I spend $500 for purchasing an ornament. When I was supposed to see another I wish to buy that. But spending again for the ornaments also not a good idea. I am also not willing in spending $500 for the ornament. So, I decided to go for an ornament that costed only $250. No, my marginal benefit get decreased from $500 to $250. When I decided to go fro the second one or more than one of same good my marginal benefits decrease.
Marginal cost is something that changes in a smaller range in the production of one additional unit. For example I decide to manufacture 500 pens. i need raw materials for the production and a building and machine for production. The change in the cost or expenses that happens when I decide to produce 600 pens is the marginal cost.
Answer:
Mesolithic Era
Explanation:
The Climate, geographical condition, and biological diversity in The Mesolithic era is drastically different from the current condition because the era was formed shortly after <em>the Last Glacial Maximum.</em>
Before last glacial maximum, the environment surrounding Europe is still covered in ice sheets. After the last glacial maximum period. the temperature in this territory started to rise. Causing a change in climate, land forms, and the type of organisms that can survive.
