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 It's
very warm outside these days. I'm sure many
of you are enjoying the nice weather. In spring, we can see many butterflies.
They are very beautiful! Just imagine the world without
butterflies. It would be a sadder place without the joy that the sight of a butterfly brings!
Butterflies are also very helpful to us. Keep reading
and find out how butterflies
help us!
Every year, butterflies tell us the arrival of spring. They do
another very important job for us, too. That's right. They pollinate plants, so that
plants can produce seeds and fruits.
We can enjoy many fresh fruits thanks to the hard-working butterflies!
A lot of plants need help getting pollen from the flower's
male stamen수술 to the ovules난세포. Ovules are like plant eggs. The seeds
grow from them. Butterflies are great pollinators. A butterfly's
proboscis (the long tube-like
mouth) can reach way down into the flower to suck nectar. And its head gets
pollen all over it.
 Butterflies
are good food to many birds, too. They are especially delicious when
they are still caterpillars. Many songbirds feed on butterfly larvae.
Butterflies also let us know nature's conditions. For example, if
a place has a lot of butterflies, which then become fewer or disappear altogether, then that's a
sign the place has problems.
Like other insects, butterflies can change plants through evolution or adaptation. Butterfly caterpillars
feed on plants. And these plants produce substances that taste bad
to the caterpillars to protect themselves.
Surprisingly, however, many
of these substances taste good to humans! Plants that have developed defenses against insects
and resulting good tastes to
humans include onions, basil, cabbage
and peppers. |
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