Look at the drawing. what would most likely cause the rock to break apart
A) Water freezes in the cracks
B) Wind blows theough the cracks
C) Heat forces the rock to crack
D) Earthquakes cause the rock to crack.

its basically A)    extra 20 spaces  

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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~ trueboss72