Analysis:

The biggest dragonfly!

Distributed in South America. Length 12 cm, it is the largest dragonfly in the world.

Fish that lays the most eggs!

Molas can lay more than 300 million eggs at a time, which is the largest number of fish in the world.

The heaviest insect!

The beetle of Jinhua University of Science and Technology weighs between 70.9 and 99.2 grams, which is the heaviest insect in the world.

The fastest flying insect!

Australian dragonflies can reach 58 kilometers per hour and are the fastest flying insects.

The shortest nation!

Mbuti people are the shortest people, with an average height of 1.35 meters.

The highest country!

The average height of Tutsis is1.83m, which is the highest nation.

The biggest sea!

The Coral Sea covers an area of 479 square kilometers and is the largest sea in the world.

The smallest sea!

With an area of only 1. 1 ,000 square meters, the Malak Sea is the smallest sea in the world.

The highest mountain of life and death!

Aconcagua Mountain is 6096 meters above sea level and is the highest extinct volcano in the world.

The shortest active volcano!

Mount Tai is only 200 meters high and is the shortest active volcano in the world.

The longest-lived mammal!

An elephant can live 180~200 years old, which is the longest-lived mammal in the world.

The most poisonous animal!

The golden stinger frog can kill 1500 people at once and is the most poisonous animal in the world.

The heaviest egg!

The average weight of ostrich eggs is 180 ~ 200g, which is the heaviest egg in the world.

The smallest egg!

Grass bird, only 0.36~0.37 grams, is the smallest egg in the world.

The smallest spider!

It was discovered in the tropical forest of Panama last year. 0.8 mm long.

The smallest bird!

The smallest bird in the world is a miniature hummingbird. It weighs 2 grams and is 5 centimeters long from the tip of the mouth to the tip of the tail.

The smallest mammal!

A few years ago, a new competitor for the title of "the smallest mammal"-flying squirrel was found in the tropical jungle of Thailand. It weighs about 2g, is 3cm long, has a head length of 1 1mm and a wingspan of 5.5cm It feeds on small insects.

The oldest dog!

This spring, the world's oldest "birthday dog" died in Brisbane, Austria, at the age of 32, equivalent to living 224 years.

Mammals with the largest milk production!

A blue whale can produce 430 liters of milk every day during lactation, which is equivalent to five times that of the best cows.

The most fragrant flower-generally considered to be the orchid called "Xiangzu". Orchids also have the reputation of "the best fragrance in the world"

The plant with the longest leaf life-centennial orchid.

The most drought-tolerant flower is the arrow lotus, also known as cactus flower.

The flower with the most colors and varieties is the rose. There are tens of thousands of colors in the world, including red, orange, white and purple, as well as mixed colors, cross colors, silk colors, multicolor and edging, and rare blue and brown.

The most color-changing flower is a rare variety of carnation. This kind of flower is white in the morning, rosy at noon and purple at night.

The flower with the most color change-colored hibiscus flower, its flower is white at first, light red the next day, dark red later, and purple when it falls. According to the Southern Song Dynasty's An Art Must Be Used, Qiongzhou produced a kind of "colored hibiscus", which was called "civil servant flower" because it was yellow one day, reddish one day, crimson four days and even purple one day.

Peony, the richest flower.

Pride, the most virtuous flower-plum blossom

Epiphyllum, a brilliant flower, is a flower that moves every second.

The most affectionate flower-the other shore flower

The most punctual flower-the clock flower

The most outstanding "canal" in the world

The human heart can work continuously for more than 100 years, pumping out 6 to 8 tons of blood every day, and the blood pumped out in three and a half years can float a 10,000-ton ship.

The world's smallest "radio station"

Scientists have found that every cell in the human body is a micro-radio, which can emit electric waves with a frequency of 150 K C, slightly lower than the radio frequency.

The world's smallest "chemical plant"

The metabolism of the human body is mostly chemical changes. Under the management of hundreds of catalysts called "enzymes", chemical reactions are carried out in sequence according to a series of complicated procedures. Most of this is done in the smallest "chemical plant"-only 1.5 kg liver.

The world's most primitive "engine"

The lung is like an engine, which promotes the speed of oxidative metabolism. When the chest cavity expands to the maximum, the lungs can hold 4.5 liters of air. The area of oxygen inhalation in the lung is 129027 cm2.

The strangest "steel bar" in the world

The human body is completely supported by bones, which are hollow, but there are many artistic and scientific structures that meet the mechanical requirements, and each square meter of bones can bear the heavy pressure of 1 ton.