the mineral sample did not scratch the glass plate. fingernail did not scratch the sample. If the hardness of the glass plate is about 5.5 and the hardness of fingernail is 2.5, which of the following best describes the mineral's hardness estimate?

The images show two different fronts. which fronts are shown? item a shows a cold front, and item b shows a warm front. item a shows an occluded front, and item b shows a cold front. item a shows a warm front, and item b shows a stationary front. item a shows a stationary front, and item b shows an occluded front.