Answer:
C. Lack of rain or disease could destroy a food supply.
Explanation:
When people first adopted agricultural lifestyle the main challenge they had was natural causes destroying the food supplies.
This is actually a problem that exists until today, as the climate or disease of the crops can severely affect the production. In the parts of the world with a huge industry, this can be prevented.
Yet, parts that don't incorporate much of the industry into agricultural processes, like it was in the ancient times, the floods, storms, blizzards, droughts, etc. affect food supplies a lot and propose a threat to the nourishment of the people.
<u>Back in the days, people had no means of fighting the diseases that would attack plants or oppose the weather conditions, so once a disease or disaster attacks the agricultural resources they would stay without a large part of the supply for the upcoming period. </u>
Answer: C
Explanation: An introduccion should, as its name suggests, introduce to the topic we are about to talk about and what are the reasons behind whatever we are writting about.
A reader who reads the introduccion should know ,after having read it, what are we going to talk about and why we wrote about that topic. Some details might be included there but it have to be more as a summary.
Until 1950, the US mainly used political pressure and economic aid to contain communism. After the Korean War, the USA embarked on a major military buildup. They had previously only focused on Europe, but now they included Asia in their focus on containing communism.
Skinner would explain why one student responds positively to receiving a B on a test while another student responds negatively to a B by noting that The students have different histories of reinforcement and punishment
Answer: Option B
<u>Explanation:</u>
In psychology, reinforcement are the ways with which the students and people are motivated to perform a particular activity and to avt in a certain way. Punishments are used to demotivate people from doing some thing and to discourage them.
Since both the students in those case have separate cases in reinforcement and punishment, the same gives satisfaction to one person and does not satisfy the other person. One student might be motivated to study for grade B and the other must be wanting a higher grade and thus got sad.
India and European countries represent two fundamentally different cultural, political and social systems. They present two opposite poles of the world and these poles are East and West. Two different systems present different mentalities and this gives roots to major differences in social, political and cultural differences of the countries