How rare is gray/mostly light blue eyes and pitch-black hair/dark brown almost black hair? give detail on how and why? will give brainliest.

the real answer is b. scintillation counter

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.