Which description below represents a hydrocarbon? a. an organic compound that contains only carbon and hydrogen atoms b. an organic compound that contains the maximum number of hydrogen atoms c. an organic compound that contains fewer than the maximum number of hydrogen atoms d. a group of compounds in which there is a constant increment of change in molecular structure from one compound in the series to the next?

answer: any goods being imported from another country may be subject to issued by the federal government are tariffs

explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them  

alchemy hadn't scientific methods of study, appeal to mysticism and fantasy, the knowledge of chemistry and physics were modest at that time.

alchemy was - but as new rules were discovered it either changed into chemistry or it became "unscientific".