<span>The most unpredictable presentation aid a speaker could use is a person or an animal.
Presentation aids are things other than the expressions of a speech that are utilized to support the goal of the speaker. Specifically, they can be visual aids, sound aids or other supporting innovation.</span><span /><span>
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Answer:
Great Plains
Explanation:
The Great Plains are flat lands or plain land that has no building or farmland on it. They are often covered with grass and are located in the United States and Canada.
This great plain enables wind to blow uncontrollably without hindrances because the environment are free, no houses. This inturn can be of great benefit especially in term of wind energy because wind power holds great promise for the United States because of the GREAT PLAINS and experts believe wind energy could meet as much as 20 percent of the nation’s energy needs. Therefore GREAT PLAIN are often use to conserve energy in the United State due to the environment.
GREAT PLAINS lies in west of the Mississippi River tallgrass prairie in the United States and east of the Rocky Mountains in the U.S. and Canada
Before the fifteenth century, European states enjoyed a long history of trade with
places in the Far East, such as India and China. This trade introduced luxury goods
such as cotton, silk, and spices to the European economy. New technological
advancements in maritime navigation and ship construction allowed Europeans to travel
farther and explore parts of the globe that were previously unknown. This, in turn,
provided Europeans with an opportunity to locate luxury goods, which were in high
demand, thereby eliminating Europe’s dependency on Eastern trade. In many ways,
the demand for goods such as sugar, cotton, and rum fueled the expansion of European
empires and their eventual use of slave labor from Africa
Answer:
The conclusion is false, because it is assuming that correlation = causation.
Explanation:
An important principle in statistical analysis is the principle that when correlation exist between two variables or more, it does not mean that one of the variables are causing the other to appear in a certain manner.
Remember that correlation means that you are investigating whether a relationships exists between two variables; in this example, as we can see, it is between the biodiversity in an ecosystem and the population of an insect.
The graph can be said to illustrate the result of the research; that as the biodiversity of the ecosystem goes down, the insect's population goes up. This is a form of negative correlation.
However - we do not know what is the direction of the relationship; the student concludes that as some insects die within the ecosystem, the researched insect's population goes up; assuming that the predator species died off and thus the researched insect's population increases.
Yet, it is also possible for the relationship to go towards the other direction; the researched insect population increases - perhaps by the introduction of a new food source that causes the species' population to increase - and thus, this damages the biodiversity of the ecosystem, making the population go down since it is possible that the researched insect is instead the species which is on top of the food chain at that ecosystem.
To investigate the direction of a relationship, further research need to be done and more sophisticated statistical methods need to be used.
