- All organisms need energy and matter to live and grow. As a basis for understanding this concept:
- Students know plants are the primary source of matter and energy entering most food chains.
- Students know producers and consumers (herbivores, carnivores, omnivores, and decomposers) are related in food chains and food webs and may compete with each other for resources in an ecosystem.
- Living organisms depend on one another and on their environment for survival. As a basis for understanding this concept:
- Students know ecosystems can be characterized by their living and nonliving components.
- Students know that in any particular environment, some kinds of plants and animals survive well, some survive less well, and some cannot survive at all.
- Scientific progress is made by asking meaningful questions and conducting careful investigations. As a basis for understanding this concept and addressing the content in the other three strands, students should develop their own questions and perform investigations. Students will:
- Classify objects (e.g., rocks, plants, leaves) in accordance with appropriate criteria.