What causes a nuclear fission chain reaction to continue?
a. thermal energy added to the system from the surroundings
b. the neutrons that result from the previous fission reaction
c. the energy that results from the previous fission reaction
d. thermal energy released from the system to the surroundings

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.

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