The function of the respiratory system is to move two gases: oxygen and carbon dioxide. Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them
Answer:
fossils can be used to identify rocks of the same or diffrent ages.
Answer:
Old Rivers : Travel Very Slowly
Young Rivers : Travel Fast
Mature Rivers : Travel Slowly
Explanation:
(Apex)
Early diagnosis of childhood cancer is often difficult because the signs and symptoms are SIMILAR TO THOSE OF OTHER CHILDHOOD DISEASES.
Doctors generally find it difficult to diagnosis cancer i children because the accompany symptoms for the disease is quite similar to those of other diseases that children experience. Cancer in children usually occur very rapidly and its diagnosis in most cases typically occur at the late stage.
