Please help!! need a hypotheses

Here are the answers.

1.Runoff from the land in a stream’s watershed……….

2.And water from its tributaries.

3.At the stream’s headwaters, the gradient………..

4.The greater the water speed, the larger the stream load………..

5.Which is made up of: a) suspended load, b) dissolved load, c) bed load

6.Under these conditions a braided stream may form

7.Where gradient flattens, a meander may form