In 1952, chemists Harold Urey and Stanley miller mixed ammonia, methane, and hydrogen in a closed container, zapped it with electrical sparks, and found that they had created many amino acids.
What are Amino Acids?
Organic substances known as amino acids have both amino and carboxylic acid functional groups. Although there are hundreds of different amino acids in nature, proteins, which are made up of alpha-amino acids, are by far the most common.
According to the positions of the primary structural functional groups, amino acids can be categorized.
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The answers are B.The modern-day nation of Mongolia is landlocked.
C.Mongolia--the homeland of the Mongols--is located in central Asia. A is wrong because the Gobi desert is to the south of mongolia. <span /><span>
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Answer:
Once locked in war, Vietnam and the United States have built mature ties rooted in mutual ... Four decades after the end of the Vietnam War, the relationship between the United States and Vietnam has changed remarkably.
Explanation:
The traditional caste system in India was a system in which the people were divided in several castes, and they were not able to change their caste during their life. A caste represented a social status, so in what caste a person is born in that caste that person spends its life.
The members of the same caste were interacting with each other. They collaborated, visited each other, married between each other. They also used the same public places, lived in similar facilities, and were pretty much on the same level in most aspects of life.
When it came to members of different castes, than they were not communicating with one another except if they had to. Marriages between members of different castes were forbidden. Also, it was humiliating and shameful to interact with people from lower castes, so we can easily say it was an example of segregation in the society.
5-b
6-a
7-b
8-c
these are the answers for these 4 questions
