A population of birds on the coast of California range in size from 9 cm to 15 cm. Another population of the birds exists on the distant island of Catalina off the same coastline, but all of these birds are 15 cm. What is the most likely explanation for the difference in sizes among the birds? mutation
disruptive selection
founder effect
bottleneck effect

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