Answer:
hi
Explanation:
Based on the map we could see that Western Europe has higher percentage of population that is over age 65 as compared to Eastern Europe. Hence, the answer to this question would be “Eastern Europe has a younger population than Western Europe.”
so it is B
Answer:
A control should have been included in the investigation
Explanation:
It is impossible for the student to interpret a correct conclusion about his experiment, without adding a control treatment where he can really compare the differences between the variables.
Control treatment is an element of research that receives all factors, except the variable being tested. The control serves to make comparisons with the other treatments, allowing to observe the exact difference between a system where the variable was tested and the system where it was not.
In the case of the question above, it would have been necessary for the student to have placed a cart on a ramp of normal height and without sandpaper. That way he could compare the speed between this cart and the carts on the other ramps, thus having a correct result.
<span>La vida es una pregunta ética debido a que todas nuestras oportunidades y elecciones hacen que aprendamos y crezcamos a partir de ella</span>
The preamble sort of symbolizes what America is about.
The answer to the question is D.
Rail connections to the Great Plains proved especially devastating. After acquiring horses, Indians there had become heavily dependent on the plains bison for food, shelter, clothing, trade, and much more. In 1872 it was found that bison hides could be processed into commercial leather, and white hide-hunters immediately set out to meet that demand. Within a decade they had driven the millions of animals to the verge of extinction. The slaughter would have been unlikely, probably impossible, had railroads not provided the means to ship the hides and bones off to eastern factories. In one year near the end of the carnage, 1881–1882, the Northern Pacific shipped 2,250 tons of hides from the northern plains. Once the herds were gone, plains Indians had no true option but to turn to reservations and dependence on federal support. In effect the life blood of a people had bled away through the rail lines.
