Answer:
It is the first law of thermodynamics
Explanation:
The first law of thermodynamics is a version of the law of conservation of energy, adapted for thermodynamic systems. The law of conservation of energy states that the total energy of an isolated system is constant; energy can be transformed from one form to another, but can be neither created nor destroyed.
Here we have a transfer of energy from the propane in the container into cooked food and heat.
The flood of immigrants began to alarm many native born Americans. Some feared job competition from foreigners. Others disliked the religion or politics of the newcomers. During the 1850's, the America Party, also called the Know-Nothing Party, demanded laws to reduce immigration and to make it harder for foreigners to become citizens. Although the part soon died out, it reflected the serious concerns of some Americans.
"a"both of these :)
would be the best one
They served as scouts and spies for the union. They also enlisted in the union.
