Because of all of the new settlement and diseases which they were not imune to.
Answer:
A) Bright lights will keep more students awake in class than dimmer lights.
Explanation:
Professor Boredom's hypothesis in this example is that<em> bright lights will keep more students awake in class than dimmer lights</em>. In this example, Professor Boredom is blaming sleepy students on lights. Lights are the independent variable that he can manipulate to find the number of sleepy students. The number of "sleepy students after the lecture" is according to Professor Boredom, the dependent variable that responds to the independent variable the "amount of light".
Im 99% sure that this is an opinion because it isn't for a fact true.
Well i like to turn in music in my headphones really loud at full volume and dance around!! Hope this helps!! :)