Which change over time in Landsat maps would be related to contaminated water nearby,: increased size of dark green areas, green areas replaced with yellow areas, gray areas replaced with light green ones, or increased size of gray areas

The change over time in Landsat maps related to contaminated water nearby would likely be an increased size of gray areas. This could indicate the spread of pollution or contamination in the water, leading to a decrease in the health and vitality of the surrounding vegetation.