What method or technology could reduce
the runoff?

Explanation:

1 Disconnect/Redirect Downspouts.

2 Use a rain barrel to capture rain from your roof.

3 Plant a rain garden.

4 Plant trees.

5 Reduce impervious surfaces; install permeable.

6 Plant a green roof.

i need

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.