In calisthenics, the resistance is ultimately provided by
a. free weights
b. springs and elastic bands
c. gravity
d. weight machines

The anwer you are looking for is c. gravity. This is because calisthenics is force applied by yourself. There is not an option that says self applied force, but the only answer close to that is gravity.  

Hope I helped. please tell me if I was incorrect

their crystal patterns have been disrupted by stress

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!