If a star is 17 light-years away, how long does the light from the star take to reach Earth? A
17,000 years

B
1,700 years

C
170 years

D
17 years

Kidney stones are tiny crystals of calcium or magnesium that block the narrow sections of the excretory system. which symptoms would a person with kidney stones experience? a. inability to store urine; pain in the bladder b. inability to store urine; pain in the urethra c. reduced urine flow; pain in the bladder d. reduced urine flow; pain in the urethra