Ecosystem Structure: Energy and Matter Flow: Science Unit 7, Grade 9 (Letters & Devotion)

Description

Ecosystem Structure: Energy and Matter Flow is Unit 7 of Biology: Systems, Structure, and Change (Grade 9), the Letters & Devotion Science course, complete in one printable PDF: 8 lessons, the unit check-up and the answer key, 75 pages.

• The 10% energy transfer rule between trophic levels
• The causal link between cellular respiration’s energy loss and the ecosystem-level 10% rule
• Food chain vs. food web as representational models of energy flow
• The carbon cycle as conservation of matter across biosphere, atmosphere, ocean, and geosphere reservoirs
• Structural similarities and differences between the carbon and nitrogen biogeochemical cycles
• Energy-ceiling math as a constraint on ecosystem-change sustainability
• The generality of one-directional energy loss independent of the specific energy source
• Predicted redistribution of energy flow following removal of a species from a food web

Every lesson is written for a parent with no teaching background: it opens with a short script to read aloud, names the specific wrong idea a student is likely to reach for and how to correct it, and closes with a practice sheet you may copy for your household. Scripture references are King James Version throughout. Black-and-white, 8.5 x 11 in. The whole year of this course is also in this store as a single book.

AI note: The written content of this resource was drafted with AI tools, then reviewed and edited by the author.