What is x(7-x) when evaluated for x= -4b.) 0c.) 4d.) 56 *put geography instead of math*

In a scientific experiment, a is any factor that can be changed or be changed

Regions are always defined by a. climate b. many different factors c. mountain ranges d. continents & bodies of water

If we review the changes in the landscape surrounding the great salt lake in utah we can see a change in topography. look at the area to the south of the lake. what changes occurred during the last twenty-nine years? a-erosion of the hills b-an increase in marshland c-flooding of the area and the development of wetlands d-deposition of sediments and an increase in elevation