They avoid being detected because this would throw off the behavior patterns that exist naturally and they don't want their presence being known since this might throw it off.<span />
Answer:
Hmm there are many things such as demographic transitional models, and epidemiological transition models, population pyramids, etc.
Explanation:
the models and population pyramids both help someone learn about an area at a given time. We can see how developed a country is by looking at birth and death rates, gender ratios, etc. For example, less children and a longer life expectancy means a more developed country, seeing as people live longer so there is no need for all those kids, and women are being given more education so it is less likely for them to want to stay home, but rather go out and get an education (:
They should not complain about bad treatment because the South is still recovering from the war.
<u>Explanation:</u>
At the wartime, African played a crucial role in America getting independent. In that time, they faced oppression, then they saw an opportunity to break free from slavery and unfair behaviour.
During the war, blacks fought for both the sides which so ever can help them in gaining freedom in when a new country is created. Black history and the south suffered a lot from racial discrimination.
Blacks have even tried to find a place in private or a working sector. their struggle is very long and hard. They have always fought for their survival. If America was able to get free from Britain than southern black has been so important in doing it.
I'm pretty sure that it is (Germany) :)
C chemicals are the only substance that can cause dissolveing or mass burning tension with atoms in a place and a human has chemicals also in the stomach which is used to break down food
