The correct answer is B. Antoine-Laurent de Lavoisier was a French chemist, biologist and economist who discovered <em>the law of conservation of matter</em> in 1785.
This law states that during a chemical reaction, <u>the total mass in the system remains constant</u>, that is, the mass consumed of the reactants is equal to the mass of the products obtained.
Answer:
Workers on the home front play a key part in winning the war.
Explanation:
The poster shows a great amount of encouragment for those not working. This is because of the use of "total warfare" where many sacrifieces were made to have the strongest army
Answer: A free enterprise economy has five important characteristics. They are: economic freedom, voluntary (willing) exchange, private property rights, the profit motive, and competition.
Explanation:
The answer is B, communism. This is easy to remember because Europe colonized Africa, and basically enslaved the native peoples. Europe is never associated with communism, so it would not make sense for them to be fighting it.
