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Unit: Matter and energy in ecosystems

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Possible mastery points

Population growth and carrying capacity

This town ain't big enough for the two of us: what happens when organisms compete over limited resources?
NGSS:
HS‑LS2‑1
,
HS‑LS2‑2
,
HS‑LS2.A.1

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Practice

Quiz 1

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Flow of energy and cycling of matter in ecosystems

Why are there more squirrels than wolves? In a trophic pyramid, it's lonely at the top.
NGSS:
HS‑LS2‑3
,
HS‑LS2‑4
,
HS‑LS2.B.1
,
HS‑LS2.B.2

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Practice

Quiz 2

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The carbon cycle

Carbon in the soil, carbon in the sea, carbon in you and me: it's all a cycle of give and take!
NGSS:
HS‑LS2‑5
,
HS‑LS2.B.3

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Unit test

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About this unit

This unit explores matter and energy in ecosystems. Learn about population growth, carrying capacity, energy flow, matter cycling, and the carbon cycle.
Biology is brought to you with support from the Amgen Foundation