<span>Sand dunes can encroach on human habitats. Sand dunes move through a few different means, all of them assisted by wind. One way that dunes can move is through saltation, where sand particles skip along the ground like a rock thrown across a pond might skip across the water's surface. When these skipping particles land, they may knock into other particles and cause them to skip as well. With slightly stronger winds, particles collide in mid-air, causing sheet flows. In a major dust storm, dunes may move tens of meters through such sheet flows. And like snow, sand avalanches, falling down the steep slopes of the dunes that face away from the winds, also moving the dunes forward.
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Answer:
If graph goes upward, it means profit and if the graph comes downward it means loss.
Explanation:
If the graph goes in the upper direction so this means that maria is running a profitable business by selling taco and Maria’s total revenue exceeds her total profit. But if the graph comes down, it means that maria having losses in her business and Maria’s total profit exceeds her total revenue. This is because the tacos is not buying by the people in the neighborhood.
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The correct answer to this open question is the following.
Although there are no charts attached, we can say that the process that more accurately depicts the evolution of humankind is the following. Humans developed form early forms of primates. After Australopithecus, the Homo Abilis appeared approximately 1.5 million years ago. Then, the Homo Erectus approximately 300 000-200 000 years ago. Somehow we cohabited with the Nehardental, and then we appeared as the Homo Sapiens. Today, scientists state that we are related to bonobos and chimpanzees.
