Water trapped inside the cracks of rocks may freeze during the winter. As a result of this,. A) earthquakes are likely to occur
B) rocks are likely to break apart
C) diamonds are likely to form
D) volcanic rocks are likely to form

The water trapped inside the cracks of the rocks will freeze during the winter season. They will contract and will form ice which will apply pressure on the rocks. This will cause them to break apart and turn into smaller pieces. Hence the correct option is:

The above phenomenon is responsible for the physical weathering of rocks to form soil.

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally