The True Book of Conservation Author:Richard Gates This is part of the True Book series. At one time, much of this land was wilderness, a community of forests, grasslands, streams, wildlife and wild flowers, each dependent on the others in some way. The harmony of the land community was not disturbed. But as men settled on the land and turned under the grass, cut the forests, killed off the wild... more »life, many things changed and much valuable topsoil was carried off by the muddy streams.« less