An individual with the disorder xeroderma pigmentosum is hypersensitive to sunlight succumbs to dna damage caused by light exposure. what is the probable cause for this disorder?
a. a fear of exposure to sunlight
b. a defect in a dna repair enzyme
c. an improper hormonal mechanism

b. A defect in a DNA repair enzyme

Xeroderma pigmentosum is a genetic condition where the person can't repair DNA damage caused by UV rays.

answer by yourhope:

answer is

human impact on the environment can be seen in the deterioration of the !

: )

that would be called plucking : )

explanation:

''plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". as a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock."