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.
They are considered as biased. Explanation: It's biased because it's based on how we feel instead of facts
Answer:
c. The amount of variation of a particular trait does not affect how quickly a trait evolves.
Explanation:
Variation is the diversity observed within a species. In a species all the organisms are not identical. They can vary in different characteristics like shape, size or colour. Variation can lead to natural selection because a particular variant of a trait can be favoured over the other ones and eventually it becomes dominant in the population.
Evolution of a trait is also effected by the amount of variation present in that trait. More the variation, more different will be its response to the changing environment and more time can be required to incorporate these changes within an organism.
Answer:
covalent bond
it has 1 (outer most shell)
it has 7 (outter most shell)
hydrogen gains 1 chlorine gains 1
Explanation:
covalent bond as atoms share electrons to achieve full outer shell if electrons
hydrogen gains one to achieve 2 electrons in outer shell
chlorine gains 1 to achieve 8 electrons in outer shell
The answer is A.) Layers
hope it helps.