everything
man-made structures were made by humans, but natural structures made itself.
Man made solid structures are structures that humans have built. Examples of man made solid structures are dams, brick walls and concrete and cement blocks.
A structure made by a man
Great Wall of China
Natural structures are formed by themselves whereas man made structures are built to look like something ...
I don't
Alaska's man made resources are Rampart Dam, APW Reservoir and Atka Power Dam. Rampart Dam is the one of the world's biggest man-made reservoirs.
man made structures are something that a human builds, and a natural structure is something that comes into the world naturally.
acid rain destroys man made structures
The tokyo tower The imperial palace The under water pyramids
They are man made structures
Man-made structures