Answer:
d. The Indus river was completely within the boundaries of the Persian Empire, Alexander's conquests, and Mauryan Empire
Explanation:
The Indus river is located in what it is Pakistan these days. It is the only river that was completely within the boundaries of the Persian Empire which include parts of current Pakistan, Alexander's conquests which included territories from Macedonia until parts of India, and also Mauryan Empire that included parts of current Pakistan up to some parts of current Bangladesh. The river Ganes, Krishna and Brahmaputra were part of the Mauryan Empire however, they are not included in the Persian Empire or of Alexander's conquests.
Answer:
In vector calculus, the curl is a vector operator that describes the infinitesimal rotation of a vector field in three-dimensional Euclidean space. At every point in the field, the curl of that point is represented by a vector. The attributes of this vector (length and direction) characterize the rotation at that point. The direction of the curl is the axis of rotation, as determined by the right-hand rule, and the magnitude of the curl is the magnitude of rotation. If the vector field represents the flow velocity of a moving fluid, then the curl is the circulation density of the fluid. A vector field whose curl is zero is called irrotational. The curl is a form of differentiation for vector fields. The corresponding form of the fundamental theorem of calculus is Stokes' theorem, which relates the surface integral of the curl of a vector field to the line integral of the vector field around the boundary curve.
The alternative terminology rotation or rotational and alternative notations rot F and ∇ × F are often used (the former especially in many European countries, the latter, using the del (or nabla) operator and the cross product, is more used in other countries) for curl F.
Unlike the gradient and divergence, curl does not generalize as simply to other dimensions; some generalizations are possible, but only in three dimensions is the geometrically defined curl of a vector field again a vector field. This is a phenomenon similar to the 3-dimensional cross product, and the connection is reflected in the notation ∇ × for the curl.
Explanation:
North Atlantic Ocean, it's in a cluster of islands located off the east coast of the United States.
Best describes Antarctica are known as reserves of oil and coal as well as mineral deposits in Antarctica.
<h3>What do you mean by Antarctica?</h3>
Antarctica is known as reserves of oil and coal as well as mineral deposits Antarctica although detailed knowledge of these mineral deposits.
There are deposits of minerals in Antarctica including coal and iron ore. Antarctica refers to the major source of oil and coal for the world.
Therefore, C is the correct option.
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