Which of the following weathering processes involves the constant freezing and thawing of water?
a. unloading
b. exfoliation
c. frost wedging
d. spheroidal weathering

Frost wedging is a kind of mechanical weathering created via frost and iceberg. Water expands while it freezes, and reiterated series of chilling and melting gradually reduce the fundamental probity of acceptable and fractured rocks. Over time, frost wedging increases small breaks toward large holes. The holes ultimately divided the rock completely into pieces.

Frost wedging is a gradual cyclical process of water freezing. Throughout the daylight, the fluid water heated by the sun streams into tiny holes, fissures and spaces ranges in rock.

the old way of life was represented by superstition, an angry god, and absolute submission to authority. the thinkers of the age of reason ushered in a new way of thinking. this new way championed the accomplishments of humankind. individuals did not have to accept despair. science and reason could bring happiness and progress. kings did not rule by divine right. they had an obligation to their subjects. europeans pondered the implications for nearly a century. americans put them into practice first.

abu bakr, was a senior companion and—through his daughter aisha—a father-in-law of the islamic prophet muhammad. abu bakr became the first openly declared muslim outside muhammad's family. abu bakr served as a trusted advisor to muhammad.