Answer:
D. Allow him to go around obstacles too difficult.
A nephron is the functional unit of the kidney. it is the structure that produces urine which is the process of removing waste and excess substances from the blood. there are about 1,000,000 nephrons in each human kidney.
Answer:
Explanation:
A) a communicable disease is a disease that can spread from person to person.
A non communicable disease is a disease that's cannot spread from person to person.
Pathogens can enter the body through the air. Air particles can contain particles of human sneezing and spread to other people.
True and for the age it depends on where you live
