Answer:
increased food supply
Explanation:
with better, more nutritious food, they were able to live longer, and were healthier
Advantages: Primary sources directly address your topic and often provide information that is unavailable elsewhere. For example, the questions you compose for an interview or a survey will likely target your unique interest in the topic. Similarly, to test a particular hypothesis, you can design your own experiment.
Disadvantages: Some primary sources, such as eyewitness accounts, may be too close to the subject, lacking a critical distance. Others, such as interviews, surveys, and experiments, are time consuming to prepare, administer, and analyze. Finally, unless you have been trained in accepted methodologies, your own primary research in certain fields of study may not be recognized as valid.
It was a hurricane (Hurricane Katrina).
Energy movements among the earth system spheres
The answer to go in the blank would be ''river'' because the river was very vast and it was useful for many functions, so the English wanted to claim it.
