Students learn about energy flow through an ecosystem, the effects of changes in an ecosystem, and the importance of carbon dioxide to the survival of plants and animals.
(5.9A) Interactions in Ecosystems
The student is expected to observe the way organisms live and survive in their ecosystem by interacting with the living and non-living elements.
(5.9B) Energy Flow
The student is expected to describe how the flow of energy derived from the Sun, used by producers to create their own food, is transferred through a food chain and food web to consumers and decomposers.
(5.9C) Changes in Ecosystems
The student is expected to predict the effects of changes in ecosystems caused by living organisms, including humans, such as the overpopulation of grazers or the building of highways.
(5.9D) Carbon dioxide-oxygen Cycle
The student is expected to identify the significance of the carbon dioxide-oxygen cycle to the survival of plants and animals.
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