Matter cycles and energy flows through an ecosystem.
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Using data and observations, predict outcomes when abiotic/biotic factors are changed in an ecosystem.
Given a scenario trace the flow of energy through an ecosystem, beginning with the sun, through organisms in the food web, and into the environment (includes photosynthesis and respiration).
Given an ecosystem, trace how matter cycles among and between organisms and the physical environment (includes water, oxygen, food web, decomposition, recycling but not carbon cycle or nitrogen cycle).