<span>CLEAR-CUTTING: CLEAR CUTTING IS THE REMOVAL OF ALL TREES IN ONE OPERATION FOR HARVESTNG PURPOSE. IT IS ECONOMICALLY PROFITABLE METHOD OF LOGGING. IT GIVES SIDE EFFECTS SUCH AS LOSS OF TOP SOIL.
ACID RAIN : IT IS CAUSED BY EMISSIONS OF SULFUR-DI-OXIDE AND NITROGEN OXIDE WHICH REACT WITH WATER MOLECULES IN THE ATMOSPHERE TO PRODUCE ACIDS. SIGNIFICANCE OF ACID RAIN IS SENSITIVITY OF AGRICULTURAL LAND TO LONG-TERM ACID PRECIPITATION.
SMOG : IT IS A MIXTURE OF SOLID AND LIQUID FOG. IT IS ALSO CALLED PHOTO CHEMICAL SMOG. FOG POLLUTED WITH SMOKE AND PARTICULATES ESPECIALLY FROM BURNING COAL.
EUTROPHICATION : SEWAGE AND WASTE WATERS FROM INDUSTRIES AND AGRICULTURE ARE RICH IN ORGANIC AND INORGANIC NUTRIENTS CONTAINING PHOSPHOROUS AND NITROGEN TO SOME EXTENT.</span>
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The solar mass ( M ☉) is a standard unit of mass in astronomy, equal to approximately 2×1030 kg. It is often used to indicate the masses of other stars, as well as stellar clusters, nebulae, galaxies and black holes.
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Answer:
The photosynthesis equation is as follows: 6CO2 + 6H20 + (energy) → C6H12O6 + 6O2 Carbon dioxide + water + energy from light produces glucose and oxygen.
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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.
Explanation:
The Statue were made from Volcanic Ash from the Rano Raraku Volcano
But nobody knows who made them...
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