Nature

Humans originally have body hair to keep warm, so why do they have to shed their hair and put on clothes?
Biologists have always believed that human beings evolved from ancient apes. The origin of human beings has gone through four links: ape-human, primitive human, Homo sapiens and its contemporary species. Now.
By gaut chen3 years ago in Earth
Do you know why animals migrate?
Animals are a group of living things. They generally feed on organic matter, can feel, can move, can move autonomously, or can move things. Animals also have a variety of behaviors that can be seen as animal responses to stimuli. Behavior is the science of animal behavior. One of the more famous behavioral theories is the instinct theory proposed by Conrad Lorenz. The following is a detailed introduction for you to take a look!
By Stajila3 years ago in Earth
Hybrid animals in the world
Animals are a group of living things. They generally feed on organic matter, can feel, can move, can move autonomously, or can move things. Animals also have a variety of behaviors that can be seen as animal responses to stimuli. Behavior is the science of animal behavior. One of the more famous behavioral theories is the instinct theory proposed by Conrad Lorenz. Here is a detailed introduction to it, take a look!
By Sukkning3 years ago in Earth
Pakistan floods under the satellite!
Since the floods in Pakistan, there have been satellites keeping a close eye on the spreading disaster, such as San Francisco-based Planet's 130 Earth observation satellites.
By Monu Ella3 years ago in Earth
What did the Indra raptor look like?
A team of Chinese bio scientists announced on November 26, 2019, the discovery of a new species of tyrannosaurus, Gangling raptor, in the Feigning region of Hebei, once again refreshing the biological history of the Earth. Singling Velocipede lived around 120 million years ago during the early Cretaceous period and belonged to a small carnivorous dinosaur with a body length of only 30 cm, somewhat like the size of today's large roosters. The Singling Raptor was not only the earliest of the Asian Megalopolis but also the smallest of the group.
By Lu Da3 years ago in Earth
Is the moon an alien base?
For thousands of years, the Moon has seemed to be a mysterious celestial body. Since mankind has been capable of exploring the Moon, many suspicious and mind-boggling phenomena have been discovered, and it seems that the finger of every doubt is pointing to this topic of the Moon being related to aliens.
By Cindy Dory3 years ago in Earth
The Earth did not have oxygen from the beginning; will it disappear in the future?
Earth is a habitable planet, and the key to its habitability is the presence of oxygen. Of course, life does not have to have oxygen to survive, but only with oxygen can more advanced forms of life evolve. Because the more complex life forms, the greater the energy consumption, and oxygen itself can release a lot of energy, knowing how to use oxygen is the key to the evolutionary development of life. After billions of years of evolution, "aerobic organisms" have been able to leave the Earth to explore the universe, while "anaerobic organisms" are still bacteria. Oxygen is good, but it did not exist on the Earth from the beginning, in the early formation of the Earth, there is no oxygen on the Earth. During that period, the Earth was still extremely unstable, volcanic eruptions can be said to be the daily landscape of the planet, and a large number of volcanic activities released a large number of harmful gases.
By Sue Torres3 years ago in Earth
Humans need to be alert.
In recent years, the average temperature in many countries around the world has risen significantly, and the highest summer temperatures in the United States, Canada, and other countries in the Americas even exceeded 56 degrees Celsius, and temperatures in some parts of China also reached 45 degrees Celsius, and thousands of people around the world have died this year because of heat-related illnesses.
By Many A-Sun3 years ago in Earth
Another unidentified creature found in Antarctica
In most people's impression, the entire Antarctic continent is covered by an ice cap, a huge ice cap more than 5 million years old, with a diameter of about 4,500 km and an area of about 13.98 million square kilometers, accounting for about 98% of the Antarctic continent. The average thickness of the ice cap is about 200 meters, with a maximum thickness of more than 4,000 meters. The total volume of the ice cap is more than 20 million cubic kilometers, accounting for 90% of the world's land ice volume and 70% of the total fresh water.
By Monu Ella3 years ago in Earth
The sun's gravity is so strong, why won't the eight planets be sucked over and then hit the surface of the sun?
Why do the eight planets revolve around the sun instead of flying directly towards it? Wasn't it agreed that the gravitational force of the Sun is very strong?
By Richard Shurwood3 years ago in Earth
Can quickly heat the nearby sea to 100°C
The nightmare of marine animals is not typhoons, not tsunamis, but underwater volcanic eruptions. The moment the volcano eruption
By Flagler Danzig3 years ago in Earth
What is underneath the quicksand?
Everyone should have heard or read stories about quicksand, because quicksand is very popular in traditional cultures around the world, and it is believed that in the 1960s, one out of every 35 movies would be related to quicksand.
By Sue Torres3 years ago in Earth