I would say that the resource you could use to find the meaning of <em>ambiguous </em>is the dictionary.
An almanac is an annual publication about weather, crops, etc.
A thesaurus is a dictionary of synonyms.
An encyclopedia is self-explanatory.
A common crescent-shaped dune with horns pointed downwind is called a barchan dune.
A barchan or barkhan dune is a crescent-shaped dune. Barchan ("BAR-kahn") dunes form in areas with only one wind direction, and little or no vegetation. If conditions were "perfect"—the landscape was flat, winds blew from only one direction, vegetation could not grow, and sand was available but limited —barchan dunes would dominate a sandscape. One of the commonest types of dunes, it occurs in sandy deserts all over the world. Barchans are mostly formed by the wind from one direction and appear convex. They are arc-shaped, significantly asymmetrical in cross-section, with a gradual slope towards the wind sand ridge, and made out of well-sorted sand.
To learn more about barchan dune here
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The answer to this question is C
Troposphere is the layer where the air is thin as well as very warm
Answer:
Option (B)
Explanation:
The Maurya Empire was one of the famous and largest empire in India in its historical time. It was originated by Chandragupta Maurya, the person who had dethrown the Nanda Dynasty. He was very powerful and expanded his territory in almost all parts of India. This empire was remarkable for the regular and successful administrative system and also the finance system that eventually lead to the production and development of its economy.
The Maurya empire was bordered by the great mountains of Himalaya on its northern side.
Thus, the correct answer is option (B).
