Looks at some of the visible ways that the earth can be changed in a matter of minutes, and discusses how the natural forces involved in earthquakes and volcanoes can raise mountains, build islands, change weather, and help to produce varieties of plants and animals.
Looks at some of the visible ways that the earth can be changed in a matter of minutes, and discusses how the natural forces involved in earthquakes and volcanoes can raise mountains, build islands, change weather, and help to produce varieties of plants and animals.
Studies the highly visible and diverse world of trees, flowers, and other green-and-growing things, with their distinct ways of reproduction, respiration, photosynthesis, and nourishment. Includes suggestions for projects and activities.
