과학 동물 식물 인물 역사 지구 우주 심리

1
Why Do Sunflowers Follow the Sun?
Sunflowers are special plants that move with the sun. During the day, they turn their heads to follow the sun’s movement. This helps them get more sunlight and grow stronger. This movement is cal...
E-BOOK
2
How Cacti Survive in the Desert
Cacti are amazing desert plants that can survive in hot and dry places. Unlike other plants, they have special ways to save water and stay alive in the desert. One way cacti survive is by storing w...
E-BOOK
3
Why Do Mimosa Leaves Close When Touched?
Mimosa plants are special plants that react when touched. If you touch their leaves, they quickly fold up and close. This helps them protect themselves from danger. This movement happens because of...
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4
Why Do Green Leaves Turn Red and Yellow in Fall?
In fall, the green leaves on trees change color and turn red, yellow, and orange. This happens because the chlorophyll in the leaves starts to break down. Chlorophyll is what makes leaves green. It...
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5
Why Do Lotus Flowers Stay Clean in Dirty Water?
Lotus flowers grow in muddy ponds and lakes, but their leaves always stay clean. This is because lotus leaves have a special surface that repels water and dirt. The surface of a lotus leaf is cover...
E-BOOK
6
The Poisonous Apple: Deadly Nightshade
The deadly nightshade, also known as the poison apple, is a plant with small but dangerous berries. Even though the berries look shiny and sweet, they contain a strong poison that can harm animals and...
E-BOOK
7
Why Do Carnivorous Plants Eat Insects?
Carnivorous plants are special plants that trap and eat insects. Unlike most plants, they grow in places where the soil has little nutrients. To survive, they catch insects and absorb nutrients from t...
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8
How Coffee Beans Become the Coffee We Drink
Coffee comes from the seeds of coffee cherries, which grow on coffee trees. These cherries change from green to red as they ripen. Inside each cherry, there are two coffee beans. It takes about three ...
E-BOOK
9
The Secret of the Baobab Tree’s Giant Trunk
The baobab tree is one of the largest and most unique trees in the world. It has a thick trunk that can store thousands of liters of water. This helps the tree survive in dry and hot places like Afric...
E-BOOK
10
Why Is the Tulip the Symbol of the Netherlands?
Tulips are one of the most famous flowers in the world, and they are especially popular in the Netherlands. Today, the country is known for its beautiful tulip fields, but tulips did not originally co...
E-BOOK
11
Why Does Bamboo Grow So Fast?
Bamboo is one of the fastest-growing plants in the world. Some types of bamboo can grow up to 1 meter per day! This is much faster than most trees and other plants. Some species can even reach 30 mete...
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12
Why Do Coconuts Float on Water?
Coconuts are special fruits that can float on water and travel long distances. This helps them spread to new places and grow on different islands. The secret to their floating ability is their ligh...
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13
How Do Trees Breathe?
Trees, like all living things, need air to survive. They breathe through tiny holes in their leaves called stomata. These tiny openings allow trees to take in carbon dioxide and release oxygen. Each l...
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14
Why Moss Thrives Anywhere
Moss is a small but strong plant that can grow without trees or deep roots. Unlike most plants, moss does not need soil to survive. Instead, it absorbs water and nutrients directly from the air and ra...
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15
Vanilla Comes from an Orchid’s Fruit
Vanilla is a sweet and popular flavor, used in ice cream, cakes, and many desserts. But did you know that vanilla comes from an orchid’s fruit? The vanilla plant is a type of orchid, and its long, t...
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16
Why Do Apple Seeds Contain Poison?
Apples are sweet and healthy fruits, but did you know that apple seeds contain a small amount of poison? Inside apple seeds, there is a chemical called amygdalin, which can release cyanide when broken...
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17
Why Can We Tell a Tree’s Age from Its Rings?
Trees grow a little bigger every year, forming rings inside their trunks. These rings, called tree rings, can tell us how old a tree is and even give clues about the climate in the past. Each year,...
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18
How Are Wine Corks Made from Cork Trees?
Wine corks are made from the bark of cork trees, not from wood. Cork trees, also known as cork oak trees, have a thick and spongy bark that can be harvested without harming the tree. To make wine c...
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19
Why Do Beggar’s Tick Seeds Stick to Animal Fur?
Beggar’s tick is a small but clever plant that spreads its seeds by sticking to animals. Unlike other plants that rely on wind or water, beggar’s tick seeds attach to fur, clothing, or even feathe...
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20
Cactus Spines Help Collect Water
Cacti are known for their sharp spines, but did you know that these spines help them collect water? In dry deserts where water is scarce, cactus spines play an important role in survival. Unlike le...
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21
Why Is the Potato an Underground Stem?
Potatoes are a common food, but did you know they are not roots, but stems? Unlike carrots or radishes, which are true roots, potatoes are underground stems called tubers. A potato plant has green ...
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22
How Do Date Palm Trees Grow in the Desert?
The date palm tree is one of the few trees that can survive in the desert. Even in hot and dry conditions, it grows tall and produces sweet dates. Its secret to survival lies in its deep roots and spe...
E-BOOK
23
The Secret of Bamboo’s Strength in Strong Winds
Bamboo is known for being tall and strong, yet it can bend without breaking. This makes it one of the best plants for surviving strong winds and storms. Unlike hard trees that may snap in heavy win...
E-BOOK
24
The Special Relationship Between Fig Trees and Was...
Fig trees and fig wasps have a unique partnership. Unlike most fruits, figs do not bloom like regular flowers. Instead, their flowers grow inside the fruit, where they are hidden. Because of this, the...
E-BOOK
25
The Amazing Survival Skills of Floating Mangrove T...
Mangrove trees are special trees that grow in salty coastal waters. Unlike most trees, they can survive in seawater and even float to new places. One of their survival secrets is their unique roots...
E-BOOK
26
How Do Bees Find Flowers?
Bees are excellent at finding flowers because flowers have bright colors and sweet scents to attract them. This special relationship helps both bees and flowers survive and grow. Flowers use vivid ...
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27
The Secret of the Evening Primrose That Blooms at ...
The evening primrose is a special flower that blooms at night instead of during the day. Unlike most flowers that open in the sunlight, the evening primrose prefers the cool and quiet night to show it...
E-BOOK
28
Why Is It Confusing Whether a Tomato Is a Fruit or...
Tomatoes are often confused as either a fruit or a vegetable. Scientifically, tomatoes are fruits, but in cooking, they are often treated as vegetables. This difference makes people wonder what tomato...
E-BOOK
29
The Secret of the Lotus Root That Grows Underwater...
Lotuses are beautiful flowers that float on water, but their roots grow deep in the mud. Unlike most plants that need dry soil, lotus plants have a special root system that helps them survive underwat...
E-BOOK
30
Dandelion Seeds Travel on the Wind
Dandelions are special plants known for their fluffy white seeds. When the wind blows, these seeds fly through the air, helping the dandelion spread to new places. Each dandelion seed has a tiny pa...
E-BOOK
31
Why Don’t Bananas Grow on Trees?
Many people think bananas grow on trees, but banana plants are actually a type of grass. Unlike real trees, banana plants do not have woody trunks. Instead, their thick stalks are made of layers of le...
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32
Why Do Grapes Grow in Clusters?
Grapes are special fruits that grow in clusters, meaning many small grapes grow together on one stem. This unique growing pattern helps the plant produce more fruit and spread its seeds easily. One...
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33
How Do Chestnut Trees Spread Their Seeds with Anim...
Chestnut trees have a smart way of spreading their seeds. Instead of relying only on wind, they use animals like squirrels to help move their seeds to new places. In autumn, chestnut trees drop shi...
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34
Why Do Avocados Ripen Slowly?
Avocados are unique because they do not ripen on the tree. Instead, they only start to soften and become ready to eat after they are picked. This is why avocados often feel hard when bought and take d...
E-BOOK
35
Why Do Tulips Open and Close Depending on Temperat...
Tulips are known for their bright and beautiful petals, but did you know that they open and close depending on the temperature? This unique movement helps tulips protect themselves and control their g...
E-BOOK
36
Why Does the Scent of Lavender Repel Insects?
Lavender is famous for its pleasant and relaxing scent, but did you know that it also keeps insects away? The secret lies in its natural oils, which contain compounds that repel bugs. This special abi...
E-BOOK
37
Why Do Some Bamboo Plants Bloom Only Once in 100 Y...
Bamboo is a fast-growing plant, but its flowers are extremely rare. Some types of bamboo bloom only once every 100 years. This unusual flowering cycle is called gregarious flowering, meaning that all ...
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38
The Secret Behind Cherry Blossoms Blooming Every S...
Cherry blossoms are famous for their beautiful pink and white flowers, but did you know that they need cold winter temperatures to bloom in spring? This special process is called vernalization, which ...
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39
Are There Plants Without Leaves?
Most plants have green leaves to absorb sunlight and make food through photosynthesis. However, some plants do not have leaves at all! Instead, they perform photosynthesis using their stems. One ex...
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40
Why Do Water Lilies Float on Water?
Water lilies are beautiful plants that float on the surface of ponds and lakes. But how do they stay afloat without sinking? The secret lies in their leaves and stems, which contain tiny air pockets t...
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41
Why Do Olive Trees Live So Long?
Olive trees are one of the longest-living trees in the world. Some olive trees are over 1,000 years old, and they can survive for hundreds of years even in harsh environments. But what makes them so s...
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42
The Poisonous Mandrake – A Plant of Legends
The mandrake is a strange and mysterious plant. It has thick green leaves and a long root that looks like a human. Many old stories say that the mandrake has magical powers. Some people believed it co...
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43
Cinnamon – A Spice from Tree Bark
Cinnamon is a popular spice with a sweet and warm smell. People use it in cooking, baking, and even medicine. But do you know where cinnamon comes from? It is made from the bark of the cinnamon tree. ...
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44
Corn – A Man-Made Crop
Corn is a popular crop that people eat all over the world. It is used in many foods like bread, popcorn, and cereal. But did you know that corn does not grow in the wild? It is a plant that humans cre...
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45
Why Aloe Vera is Good for the Skin
Aloe vera is a popular plant known for its skin benefits. Its leaves contain a clear gel that people use for skincare. This gel helps protect and heal the skin in many ways. One of the best things ...
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46
Are All Tree Leaves Green?
Most trees have green leaves, but not all of them. Some trees have red, purple, or even yellow leaves all year round. The color of a leaf depends on the pigments inside it. Green leaves have a pigm...
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47
Climbing Plants That Change Direction
Climbing plants grow in a special way. Instead of standing tall like trees, they move as they grow. They change direction to find sunlight or support. Some climbing plants have thin stems that twis...
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48
Flowers That Smell Stronger at Night
Some flowers smell stronger at night. They release a sweet fragrance when the sun goes down. But why do they do this? The answer is simple: they want to attract insects. At night, some insects, lik...
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