How do limited resources affect evolution of a species?

Explain how fossils scientists make discoveries about the lives of organisms and about how environments have changed over time. plz hurry up it time

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

This patient undergoes a gallbladder sonogram due to epigastric pain. the report indicates that the visualized portions of the liver are normal. no free fluid noted within morisons pouch. the gallbladder is identified and is empty no evidence of wall thickening or surrounding fluid is seen there is no ductal dilation. the common hepatic duct and common bile duct measure 0.4 and 0.8 cm respectively. the common bile ductmeasurement is at the upper limits of normal what cpt code in icd-10 cm code was used