Desertification in the Sahil has caused a loss of farmland and migration a farmer south for more fertile land. The Sahara desert that stretches across most of northern Africa creates a barrier that divides the African cultural groups in the south from Muslim and air up in the north.
<span>To draw cause and effect conclusions, one needs to conduct a formal experiment, sometimes called a control experiment. The independent variable in this type of experiment is the only thing that is allowed to changed so the experimenter is able to conclude that the it is the independent variable which affected the dependent variable. In other words the independent variable effects the dependent variable, and it is the only thing that can effect the dependent variable.
This is not true in correlational experiments. Remember the oft repeated phrase that correlation does not mean causation. In other words, a lot of people carry umbrellas on a rainy day (there is a correlation between rainy days and people carrying umbrellas) but the umbrella carrying people did not cause the rain.</span>
The answer is the third option
Answer:
El Renacimiento trajo consigo la cultura de la investigación y la exploración. Nuevas ideas y tecnología allanaron el camino para que las personas miraran más allá de sus propias ciudades. El espíritu del Renacimiento llevó a muchos europeos a explorar el mundo más allá de sus fronteras; y ¡QUÉ RESULTADO FUE !!
Explanation:
