Every creature dies when it reaches old age. But there is one creature that never dies. This story a
[526호]
Storing fruits in a refrigerator helps us keep them fresh longer. Interestingly, it also helps us en
[525호]
Because of the space between our eyes, we can see the world three-dimensionally. Because we have two
[524호]
Nowadays, it is easy for us to enjoy seedless grapes. How do we grow them? Seedless grapes are not g
[523호]
Fingernails are necessary. They help us pick up things easily and hold on to things tightly. There a
[522호]
Passing gas is a necessary and normal part of digesting food. Absolutely everybody in the whole worl
[456호]
Many people carelessly recycle plastic products, so they enter the oceans through drains. These plas
[521호]
Because sunglasses protect our eyes from the sun, they are necessary in the summer. There are many s
[520호]
When we visit BBQ restaurants, we are less likely to find ceiling-mounted air conditioners than stan
[519호]
Because eggs are cells, they can breathe. There are about 7,000 tiny holes on an eggshell. This is w
[518호]
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