Which option identifies the factor and reason related to increases in skin cancer in the following scenario. over the the years humans are increasingly exposed to uv-a and uv-b rays, making them more vulnerable to developing skin cancer. a. use of aerosols that deplete the ozone layer b. use of cloud seeding that depletes the ozone layer c. thinning of the thermosphere that lets in more sunlight. d. thickening of the stratosphere that lets in more sunlight