How might human activities on the banks of the estuary harm the wading birds and wildfowl that feed in it?

By hand or by putting pieces of bread or other food on the ground for the bird to pick it up and eat it.

Deforestation, pollution, overhunting, overfishing.

Dying

Yes well it is

Soil pollution is the destruction of Earth's thin layer of healthy, productive soil, where much of our food is grown. Without fertile soil, farmers could not grow enough food to support the world's...