How does the abnormal shape of a sickled red blood cell affects its movement through blood vessels

Match each organ or function with its body system. produces urine large intestine ureters mouth filters blood absorbs nutrients from food

How does the molecular clock work? a. it analyzes the brain functionality of two different species. b. it examines and compares the physical characteristics of two different species. c. it illustrates relationships between two different species. d. it compares the number of mutations that exist in the dna of two different species.

Which best describes the digestive system of arthropods? a incomplete, two openings b complete, one opening c two-way, one opening d one-way, two openings