6Sci+Goal4


 * Competency Goal 4:**
 * The learner will investigate the cycling of matter.**


 * Objectives**
 * 4.01** Describe the flow of energy and matter in natural systems:
 * Energy flows through ecosystems in one direction, from the sun through producers to consumers to decomposers.
 * Matter is transferred from one organism to another and between organisms and their environments.
 * Water, nitrogen, carbon dioxide, and oxygen are substances cycled between the living and non-living environments.
 * Click [|here] for resources and activities**


 * 4.02** Evaluate the significant role of decomposers.
 * Click [|here] for resources and activities**


 * 4.03** Examine evidence that green plants make food.
 * Photosynthesis is a process carried on by green plants and other organisms containing chlorophyll.
 * During photosynthesis, light energy is converted into stored energy which the plant, in turn, uses to carry out its life processes.
 * Click [|here] for resources and activities**


 * 4.04** Evaluate the significance of photosynthesis to other organisms:
 * The major source of atmospheric oxygen is photosynthesis.
 * Carbon dioxide is removed from the atmosphere and oxygen is released during photosynthesis.
 * Green plants are the producers of food that is used directly or indirectly by consumers.
 * Click [|here] for resources and activities**


 * 4.05** Evaluate designed systems for ability to enable growth of certain plants and animals.
 * Click [|here] for resources and activities**