Which Statement Most Accurately Describes How Matter and Energy Are

Multiple Choice

Which statement most accurately describes how matter and energy are used in ecosystems?

A) Matter flows through ecosystems; energy cycles within ecosystems.
B) Energy flows through ecosystems; matter cycles within and through ecosystems.
C) Energy can be converted into matter; matter cannot be converted into energy.
D) Matter can be converted into energy; energy cannot be converted into matter.
E) Matter is used in ecosystems; energy is not.