Sunlight is an indispensable element in life, it brings us light, warmth and energy. However, sunlight also carries its secrets and risks, the most well-known of which is ultraviolet light. What is that ultraviolet light? Is it beneficial or harmful to human health? Let's go down and see~~
"Yellow Emperor Yao, Shun, Xia, Shang and Zhou, Spring and Autumn and Warring States were unified under Qin. The Han and Three Kingdoms were restored and the Jin was restored, and the Southern and Northern Dynasties faced each other. The Sui, Tang, Five Dynasties and ten kingdoms, Liao, Song, Xia, Jin, Yuan, Ming and Qing." - In Chinese history, there were 83 dynasties, 559 Emperors, including 397 emperors and 162 kings. Every emperor is a witness of the times, and their life stories have become stories that are talked about by future generations. We can often see actors calling the emperor "Long Live" in court film and television dramas, and this is true in history. But being an emperor...does he really live long? Let's read on~~
Many birds eat chick poo (poop) during brooding, and while this behavior may seem peculiar, there are several possible reasons for this bird behavior.
The ozone layer is an important component of the earth's atmosphere. It is located in the upper part of the stratosphere, which can filter out harmful rays from the sun and protect organisms on the earth from various radiation damage. However, due to human activities, a big hole was opened in this shield of the earth, and the ecological balance formed for thousands of years was thus broken. So, what exactly caused the breach of this important protective shield? Let us continue to look down.
Acid rain is a climate problem that seriously affects the environment and ecosystems. It refers to the excessive acidity contained in precipitation (such as rain, snow or fog), which causes damage to soil, water bodies and organisms. The formation of acid rain is closely related to human activities. Perhaps everyone is familiar with the term acid rain, but what is acid rain? How is it formed? And what are its impacts on Earth's ecosystems? Let's move on.
Why can't we hold our breath forever in water?
On the land of China, there is a majestic building, which is like a giant dragon entrenched between mountains and rivers, spanning thousands of years of history, witnessing the glory and vicissitudes of China, becoming the link between ancient and modern times, carrying countless stories and legends . This majestic building, the Great Wall of China, is known as a treasure of world culture, one of the greatest projects in the world, and one of the seven relics in the world.
Carbon Footprint refers to the total amount of greenhouse gases released during the production, use and disposal of products or services, and it is also an important indicator to measure the impact of individuals or institutions on climate change. Food, as an integral part of everyone's daily life, has an important impact on the environment. Behind every eating habit and every bite of delicious food, there is a hidden carbon footprint. So how does the carbon footprint in food come about? Let's find out next!
Typhoon is the display of the power of nature, and it is an unavoidable natural disaster every year, but how is typhoon formed? Let us continue to read~~
