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LessonsCatch the Flaw

Lesson 21 · Science · Energy in ecosystems

Step 1 of 4

Find the wrong step

Energy moving from grass to a rabbit and then to a fox
Your lessonEnergy in ecosystemsCore

The Backwards Food Chain

A meadow diagram shows grass → rabbit → fox.

Rabbit
Eats grass
Fox
Eats rabbit

Your question

What do the arrows show?

Lumi’s answer: “The fox gives energy to the rabbit, which gives energy to the grass.”

1

Step 1 of 4

Find the wrong step

Find where the reasoning first breaks

Start with Step 1 and move downward. Choose the first line that stops making sense.

Later lines may be wrong too. Pick the first mistake.

Lumi’s work

These lines form one solution. Read them from top to bottom.

  1. 1

    The chain contains grass, a rabbit, and a fox.

  2. 2

    An arrow points toward the organism being eaten.

  3. 3

    So the arrow at the fox means the fox feeds the rabbit.

  4. 4

    Energy travels fox → rabbit → grass.