Predict a. Use prior knowledge and observations to identify and explain in advance what will happen. Plan and conduct a simple investigation a. Ask a question about objects, organisms, and events in the environment. Use data to construct a reasonable explanation. Organisms can survive only in habitats in which their needs can be met.
All animals depend on plants.
Earth Materials A. Properties of Earth Materials 1. The varied earth materials have different physical properties and uses. Recognize that rock, clay, silt, sand, and humus are components of soils. Lessons 9-16 h. Give examples of how humans obtain and use earth materials as resources.