Apentix/AP Environmental Science/Unit 1: The Living World: Ecosystems/Question

AP Environmental Scienceeasymcq1 pt

Which statement about energy and matter in ecosystems is correct?

A.Energy flows through and leaves as heat; matter cycles

B.Both energy and matter cycle endlessly

C.Both flow one-way only

D.Producers create new matter

Explanation

Core Concept

Sunlight enters and heat exits — energy is one-way. Atoms like carbon and nitrogen are reused through biogeochemical cycles.

Correct Answer

AEnergy flows through and leaves as heat; matter cycles

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