Not sure what you mean by understanding reflection but i'll do my best.
World War II was one of / if not the biggest tragedy to happen in modern history. It taught the world important lessons about society; that we need to work together and not let our differences enable another global conflict to the degree of WW2. However, history never completely repeats itself and while WW2 was a terrible and unimaginable tragedy, it provided us with information that can help us all in avoiding a future conflict similar in nature. However, how is the author so certain that history doesn't repeat itself? Have we not seen history do such thing. For example, there were vaccination protests all throughout history just like how there is vaccination protest today. So, I am interested in how the author came to his conclusion that WW2 will not inevitably repeat itself.

In humans, the medulla region of the brain is mainly responsible for the regulation process of respiration. It is also called the respiratory rhythm centre. The chemosensitive area located near the respiratory centre sends signals across nerve impulses to alter the rate of expiration to eliminate compounds.
A pig that has internal parasites living in its intestines is what's known as parasitism.
This relationship is one of the three forms of symbiosis. Relationships involving two organisms in which at least one of the organisms benefits. The three kinds of symbiotic relationships are :
- Mutualism
- Commensalism
- Parasitism
Mutualism is the symbiotic relationship in which one organism benefits and the other does as well. An example of this can be found in our oceans, in that some fish will stick to larger sharks and clean their body of parasites in return for protection and a steady food supply.
Commensalism is the relationship between two organisms in which one will benefit while the other is not affected. One such case can be observed when birds build their nests on tree branches. The bird will benefit from the structure of the tree without causing it any harm.
Finally, parasitism is, as you may expect, is a relationship in which one organism benefits while the other Is harmed. The case given is an example of this in that the parasite will feed off of the nutrients consumed by the pig, who will, in turn, become malnourished and face health issues.
To learn more visit:
brainly.com/question/14382216?referrer=searchResults
All living organisms are made from different combinations of only 20 amino acids.
<em>Side note: there is research to support 21 amino acids. But I believe your answer will be 20.</em>
The correct anwser is Yes!!!