Answer:
Take a village and divide the population in two, with an experimental group that will be given a different diet, and a control group which will continue with their normal diet.
Explanation:
In experiment design, when we want to test whether or not certain factor actually has a real effect on a population, one of the best methods to follow is to split the population in two groups: an experimental group, where we will apply the treatment, and a control group, where either a placebo or no treatment at all will be applied. The advantage of having both an experimental and a control group is that this way we can ascertain with much more clarity whether a change in the indepent variable (the treatment) has an observable effect on the dependent variable (the effect on the population).
In our example, a practical manner to test whether longevity in Russian Georgian villages is due to genetic or dietary factors, is to take one of the villages, and split the population in two groups: an experimental group, that will be given a higher calorie diet, and a control group, which will continue to consume their normal low-calorie diet. Then we would track the differences in age expectancy over time. If after a long enough period of time there's a difference in longevity between both groups, in other words, whether one of them leads longer or shorter lives than the other, then we can conclude that our test has proven that diet has a definitive effect on their longevity. If there's no significant difference, then we can conclude that diet has no relevance and it's all due to genetics.
Slavery should be abolished- this common belief was held by Frederick Douglass, William Lloyd Garrison, and John Brown.
Option: C
Explanation:
Frederick Douglass, William Lloyd Garrison and John Brown are active socialist, reformer and writer. All of them belongs to the era which deals with the slavery system. All of them strongly oppose the slavery. They were in favor of determinism. Under their supervision American civil war was continued.
Slavery is a system in which people forcefully brought from other countries to follow the orders of higher classes in the society. Economically weak and deprived class, the tribals from various parts of America forced to be slaves.
The answer is b. the state's population
Hope this helped
<em><u>oil</u></em>
Natural resource which made Ghana a prosperous kingdom is gold. This country had abundance of gold, since it literally sat on the gold mine, and its rulers used it for many years of successful trading. Therefore, the kingdom became powerful and prosperous. In some periods even dogs in Ghana had golden collars, and Ghana's kings were among the richest men in the world. They traded gold for salt (mostly with Arabs) which was very important for people's health. Today, Ghana is the second largest gold producer in Africa.
