Because when the sun hits the earth in different angels and the climates get hotter in only some places.
Explanation:
an air mass is a body of air with relatively constant temperature and moisture content over a significant altitude are message typically covered hundreds thousands or millions of square kilometres a front is the boundary at which two air masses of different temperature and moisture content meet
<u>Stromatolites are layered mounds of calcium carbonate that were deposited by algae during the Precambrian time.</u>
Answer: Option C
<u>Explanation:</u>
Stromatolites are the deposit of the layer which is mostly of limestone and these are mainly formed by the blue green algae which are only one celled organism of primitive times.
The features of these are that they are normally thin and have layers that might be either light or dark in color and are either flat or some of them even have a shape of a dome.
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:
<h2><u>Answer:</u></h2>
Henan, a region in Central China's Yellow River Valley, is generally perceived as where Chinese human progress started. There are 4 antiquated capitals inside its fringes. Luoyang, capital amid various traditions, is home to Baima Si (White Horse Temple).
In November 2013, after the Third Plenum of the eighteenth Central Committee of the Chinese Communist Party, China reported the choice to loosen up the one-kid arrangement. Under the new strategy, families could have two kids in the event that one parent, as opposed to the two guardians, was a single kid.
