Because of the climate and the unstable living conditions
When a piece of Halite is broken, it breaks into many smaller cubes. when a mineral breaks into jagged edges. Some minerals have no planes of weakness, so they have no cleavage. Crystal Shape is the natural geometric shape of a mineral.
Hope this helps :)
The answer for your question is D
Sum of all angles in a quadrilateral is 360....so x=36
1st angle=4(36)=144
2nd angle=3(36)=108
3rd angle=2(36)=72
4th angle =36
The times of moonrise and moonset are based on ideal situations. The time of moonrise is calculated based on the fact, when the top part of the moon is above the horizon. The moonset time is considered as the time when the moon is just about to go below the horizon. I hope the answer helps you.
