How does the hardness and density of a mineral that formed through metamorphism compare to a mineral that formed through evaporation?

China was the fourth of the early river valley civilization. the two main geographical characteristics with china are rivers and mountains. this civilization took start between two river systems, the hung he and the yangtze. north china lies between these two major rivers. geography affected early civilizations by how the people could live and work. a lot of people settle by rivers to make it easier to live and get an ample water supply. only small part of the landscape is good for farming the south china. the habitats chose that plain because it is covered with wind-blown yellow soil called loses. the huang he is one of the muddiest rivers in the world. farmers learned to grow rice near yangtze, the water melted from the mountains and caused floods that to grow the rice. in the southern climate, chinese farmers could grow food, make cloth and weave baskets. because of china's geography, the villages were not interacting with each other. but when china's dynasties begins, people get closer. also they were cool. do you want to know why? well to bad

Answer;
According to the trichromatic theory of color vision, people who have red-green color blindness have normal blue-sensitive cones, but their other cones are either red-sensitive or green-sensitive. therefore, red and green look the same to them

Explanation; 
According to the trichromatic theory of color vision, there are three varieties of cones. Each type of cone is especially sensitive to certain wavelengths;- red light, green light and blue light. Thus, a given cone will be very sensitive to one of the three colors and only slightly responsive to the other two.
This theory provides a good explanation for the most common form of color blindness; that is red-green color blindness. People with red-green color blindness cannot discriminate between red and green. This is because they have normal blue-sensitive cones, but their other cones are either red-sensitive or green-sensitive.