What is foliation?
a. intergrown mineral crystals formed from cooling magma
b. randomly oriented mineral crystals placed due to confining pressure
c. thin, parallel layers of clay sediments that have been compressed
d. roughly parallel layers of mineral crystals aligned perpendicular to the direction of pressure

The correct answer is D.

Explanation:

Foliation is the arrangement in sheets that acquires the material that forms certain rocks when they are subjected to great pressures.

The sheet structure of rocks that have undergone metamorphism due to pressure, which can be vertical and derive from burial, or have another direction and is due to the convergence of plates or the action of faults. The layers are formed parallel to the direction of the cut, or perpendicular to the direction of higher pressure.

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in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-