Answer:
Rivers possess different features as they age. Old rivers usually have a low stream (gentle) gradient and low erosive energy. They usually have broad U shape, the water is usually brown and they have flood plains. Seasonal floods are also common.
Answer:
4.543 billion years
Explanation:
I looked it up on a wonderful search engine called g00gle
Answer:
a unit of heredity which is transferred from a parent to offspring and is held to determine some characteristic of the offspring.
Because the surface of a leaf is smooth if the surface was rough the water would get stuck but it is smooth so the water just rolls off
the baby is 5 feet tall (1/4 of 20)
the female is 10 feet tall (2 times 5)
hope this helped ;D