Content :

Interactions [Gr.8]

 Transformation of energy [Gr.8]
 Biogeochemical cycles [Gr.8]
– water cycle [Gr.8]
– oxygen – carbon cycle [Gr.8]
– nitrogen cycle [Gr.8]
 Impact of human activities in an ecosystem [Gr.8]

Content Standards :

 demonstrates understanding of the one way flow of energy and the cycling of materials in an ecosystem

Performance Standards :

 makes informed decisions regarding food choices based on the trophic levels

Learning Competencies :

 describes the transfer of energy through the trophic levels
 analyzes the roles of organisms in the major biogeochemical cycles and processes
 explains how materials cycle in an ecosystem
 suggests ways to minimize human impact on the environment
 describe changes caused by organisms in their environment to ensure survival, which may affect the ecosystem