Because nowadays, many horses are domesticated, and food they would have eaten in the wild, they don't usually eat anymore. They have learnt to adapt to eating other foods, like hay, that require molars to ingest. This is why over time, their tooth structure has changed.
The answer is C. Soil is considered a non-renewable resource because it takes millions of years for soil to renew itself due to the long process of soil formation hence soil is easily degraded by human activity within a human lifespan. In the picture shown, the deforestation will cause the soil to be easily eroded by elements of erosion. This will lead to desertification of the region which will result in a domino effect on the rest of the forest.
Answer: B) The mineral formed through evaporation!
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The vesicles in a cell if you were referring to a cell