Answer:
D. transfer of heat between two objects are touching
Explanation: Conduction is the process by which heat is transferred from one object to another object that are touching and have different temperatures.
Eg: We can use hot water pack to warm our back. Or While cooking we can feel the conduction process when heat process from the bottom of the pan to the top of the pan
I believe what you're looking for is economics, but I could be wrong.
Answer:
They were left out because the whole purpose of the american revolution was for the colonists to be free from the british, but the Africans were still asked to fight in the wars, and they were still held as slaves until the civil war occurred.
US nation witnessed many social and economic issues during Word War II. The then American president Roosevelt conveyed the four freedom of thought to the people with his sentimental policy focus on administration.
Explanation:
After the drastic effects of World War II, US national citizens experienced the problem of unemployment, low standard of living, The Great Depression, and low production. But Roosevelt adopted many policies to recover the losses. He also propagated the power of defending critical issues.
Roosevelt had framed his ideology with the four freedom of principles namely worship, want, fear, and speech. He envisaged such principles directly to the people with their sentiment thought.
If you have just one crop, what happens if you have drought? or too much rain? You might not have any crops then and you won't make enough money to support you family.