The answer is d. The population of light-colored moths decreased and the population of dark-colored moths increased.
<span>Peppered moth color variation is a good example of natural selection. During the Industrial revolution, due to pollution, trees become darker in the urban area. Light-colored moths were, thus, easy prey. The dark-colored moths were able to camouflage on dark trees and avoid predators. The phenomenon is known as industrial melanism. So, in polluted urban areas, the number of dark-colored peppered moths increased. In the clean environment, were much effective in hiding from predators and they outnumbered the dark-colored moths.</span>
As city populations increased in the early 1900s, cities grew up and out.
Answer:
The neutrality of the congress generated polarization in the country. This polarization caused states where slavery was prohibited to criticize and devalue states where slavery was allowed, which retaliated against devaluation with further devaluation.
Explanation:
When Congress decided to stay neutral in relation to slavery in the country, Congressmen believed that this would generate peace in the country, as each state would have autonomy to decide whether it wanted to use slaves or not.
However, the result could not have been more different. Neutrality generated polarization and many conflicts between countries that allowed slaves and prohibited slaves. Countries that did not allow slavery criticized, devalued and tried to interfere with the autonomy of the states that allowed slavery. The slaves who allowed slavery did not tolerate this interference and retaliated as best they could, in addition to promoting a strong devaluation in relation to free countries.
The correct answer to this open question is the following.
The Trans-Saharan gold and salt trade
The traders were merchants of the North and West African region that traveled in caravans, using the camel to transport people and goods across the dangers of the Sahara Desert. Akan people were involved in the trade, as well as many other tribes.
Of course, they traded salt and gold, which were the most precious resources of the time for the value they represented. Gold was a precious rock with high value, and salt was as important as gold because people used to preserve food. But they also traded animal skins, ivory, silver, sugar, pepper, and slaves.
These people conducted the trade through camel caravans across the desert, that carried the goods to important trade centers such as Timbuktu and Djenne.
In 2010 it was approximately 53,364 I believe there is now 92,000
