HS. Matter and Energy in Organisms and Ecosystems HS-LS2-4

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The principle that matter and energy are neither created nor destroyed but are transformed and transferred within an ecosystem.

A graphical representation showing the amount of biomass or energy at each trophic level in an ecosystem, illustrating how energy decreases as it moves up the levels.

A community of living organisms interacting with each other and their environment, where matter and energy flow through various trophic levels.

The basic units of matter, including elements like carbon, oxygen, hydrogen, and nitrogen, which cycle through ecosystems.

A position in a food chain or food web, representing the flow of energy from producers to various levels of consumers.

Combinations of atoms, such as water (H₂O) or carbon dioxide (CO₂), that play key roles in the cycling of matter in ecosystems.

Statements or conclusions about how matter and energy cycle through ecosystems, which are supported by scientific evidence.

The transfer of energy through an ecosystem, typically starting from the sun and moving through producers, consumers, and decomposers.