1.Describe how to fix misaligned and improperly referenced spatial data, including taking into consideration project properties

A map is a flat projection of the spherical earth. In order to display the earth accurately in a map a transformation of data is needed, otherwise continents will be disproportionate to their true size. Sometimes when you are trying to create a map you need to combine different layers that are are based on different coordinate systems. This makes things difficult as it distorts the image and can give false information in a map, as different coordinate systems project the earth in different ways. Through the software ArcGIS, you can create a new version of data for each layer to make it so it follows the same coordinate system. This ensures showing the same map projection for each layer and that they align nicely.

2. Discuss advantages to using remotely sensed Landsat data for geographic analysis.

Not only is Landsat data FREE and is accessible for developing countries who might not otherwise be able to afford remote sensing, it has moderate spatial resolution which means you can have regional detail in your images (not fine resolution). As well, you can always find up to date images as it travels around the earth in only 16 days