Question

In ecosystems, plants transform light energy from the Sun into chemical energy when they make sugar. This sugar can then be consumed by other organisms to be used as building blocks for other molecules, such as proteins and fats, or it can be transformed into other forms of energy, such as kinetic energy, when the organism moves.

Which of the following statements is supported by the above information?
A.
Matter can change forms, but only one kind of energy exists.
B.
Matter and energy can change forms and locations in ecosystems.
C.
Matter and energy must always remain in the same form and location.
D.
Energy can change forms, but only one kind of matter exists.

Answer 1

B.

Explanation: The passage describes energy changing forms (sunlight → chemical energy in sugar → kinetic energy) and matter changing forms and moving through the system (sugar used to build other molecules like proteins and fats and consumed by other organisms). The other choices are contradicted by these examples.