Butterfly Food

It was a warm summer afternoon, and a bright, colorful butterfly fluttered past. It landed on a purple flower and unrolled a long, thin tongue to sip something sweet. Then it flew to another flower, and another, doing the same thing.

Why was this beautiful butterfly so busy visiting all those flowers? Let's look for the causes of its actions and the effects we can observe.

• Observable Pattern 1: The butterfly flies from flower to flower, landing on each one.
  • Cause: The butterfly is hungry and needs food.
  • Effect: It sips sweet nectar from the flowers. This gives the butterfly energy to fly.
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• Observable Pattern 2: As the butterfly sips nectar, tiny yellow dust (pollen) from the flower sticks to its body. Then, when it flies to a new flower, some of that pollen rubs off.
  • Cause: Flowers need help to share pollen with other flowers so they can make seeds.
  • Effect: The butterfly carries pollen from one flower to another, helping the flowers grow new seeds. This is how flowers make more flowers!

So, the butterfly's hunger (a cause) makes it visit flowers (an effect). And its visits (a cause) help flowers make new seeds (an effect). Every flap of its wings, every sip of nectar, has a reason and creates an observable pattern in nature.