Question: what are the characteristics of each stages of a river?
Answer: YOUTHFUL STAGE (UPPER COURSE) – V- Shaped Valley > Erosion. ... 
MATURE STAGE (MIDDLE COURSE) – Meanders > Erosion and Deposition.
OLD AGE STAGE (LOWER COURSE) – Floodplains > Deposition. ... 
Advantages. Scenic Attraction. ... 
Dangers. Flooding – Damage to property, land, animals and homes. ... 
Advantages. ... 
Disadvantages.