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All the things we need to survive, such as food, water, air, and shelter, come from natural resources. Some of these resources, like small plants, can be replaced quickly after they are used. Others, like large trees, take a long time to replace. These are renewable resources
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Answer is B) Spanish speaking
Mexico is the most populous Spanish-speaking country in the world.
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They are 4, Argentina, Brazil, Chile and Paraguay.
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The tropic of Capricorn is an imaginary line is placed 23.5 degrees south of the Equator.
This is the zone where the sun is highest during the winter solstice, it was named around 2000 years ago by the Greeks. The word "troops", which means <em>turn</em>, because the sun seems to turn around in the opposite direction after every solstice.
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3.) Pumice
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"Pumice is widely used as an abrasive in soaps and cleaners. It is considered one of the softest abrasives on earth."
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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.
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