Final answer:
Barren lands are areas with little vegetation and include salt flats and deserts. Rocks alone are not considered barren lands, and glaciers can support minimal vegetation.
Step-by-step explanation:
Barren lands refer to areas with very little vegetation, making them unsuitable for agriculture or human habitation. Salt flats are considered barren lands because they lack the necessary nutrients and water for plants to grow. Similarly, deserts also fall under this category due to their arid conditions and scarcity of vegetation. Rocks alone do not count as barren lands unless they are part of a larger area devoid of vegetation. Glaciers are not considered barren lands as they are covered in ice and snow but can support minimal vegetation in certain areas.
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