The answer is increase in food security. The threats to food security and agricultural sustainability are the following: drought, food protection, power disruption, economics, terrorism, chemical pollutants, genetic pollutants, impacts on pollinators, soil erosion, climate alternate, and so forth.
The correct answer is C) The middle United States has fewer changes in elevation than the Western United States.
<em>The sentence that correctly compares the middle of the United States to the Western United States is the middle United States has fewer changes in elevation than the Western United States. </em>
The Midwest U.S. lies from the Appalachians and the Rocky Mountains until Ohio River. It comprises states such as North and South Dakota, Illinois, Nebraska, Kansas, Minnesota, Iowa, Missouri, Wisconsin, Indiana, Michigan, and Ohio. The Western U.S. is considered west the Great Plains and comprises the states of California, Oregon, Washington, Nevada, Arizona, Idaho, Montana. New Mexico, Utah, and Wyoming. Comparing the two regions, the middle United States has fewer changes in elevation than the Western United States.
It start in Salem, Massachusetts
