$(3)$ Moist Soil Unit Design $($MSU$)$ allows wildlife managers of waterfowl and shorebirds to

replicate floodway$/$floodplain systems by adding and removing water to and from a

restoration site.

Briefly, identify $3$ reasons for adding water to a unit:

a$.$

b$.$

c$.$

Briefly, identify $3$ reasons for removing water from a unit:

a$.$

b$.$

c$.$