Answer:
The correct answer is - A. Trade
Explanation:
Darius the emperor of the Persian empire was the first Persian emperor to use a coin system for goods, services, and even for tax which makes his economy large and developed his empire, and created a new capaital. Darius used a gold minted coin system for trade for the goods and services and salaries to the army which made his empire popular and a large economy. His economy was a trade economy as coins were used for the different type of goods, foods and services.
Advantages of asexual is only one parent is needed. Disadvantages is no genetic variation. For sexual advantages is genetic variation. Disadvantage is two parents are needed.
C. A higher amount of addictive chemicals are needed to get the same high when fewer receptors are present...
ADP has two phosphate groups and ATP has three phosphate groups but they both have phosphate groups.