Humans are mammals with a complex, sophisticated brain. They belong to the order of primates, which includes chimpanzees and gorillas as well as their extinct ancestors. The group is also known as the Hominidae, which refers to the group’s evolutionary ties to the other members of this family.

Despite our close relationship to other animals, the way that we think and act is different from other species of animals. That difference is rooted in the unique way we use our bodies.

There are many things that make humans unique, but one thing that separates us from other animals is our ability to use tools. This is a trait that enables us to build and sustain societies.

We can also create and use symbols, which we use in a variety of ways to express ourselves. We can even create and use meta-symbols, which are symbolic forms that do not represent anything in the way a symbol does.

Other traits that set us apart from other animals include having a theory of mind, being able to travel through time, and a capacity for recursion. These are all very complex behaviors that may be hard for other animals to master.

How We Reproduce Ourselves

A single sperm cell is enough to fertilize an egg cell, and it takes some effort for the female’s ovaries to produce a viable egg. After ovulation, the fertilized egg is released in the uterus where it develops into an embryo. This embryo subsequently divides into a child and eventually a grown adult.

The early human ancestors of modern humans lived between 6 and 2 million years ago in Africa. They lived on the savannah, but they were able to adapt their bodies and minds to survive in other habitats as well. They evolved into hunters and gatherers who could hunt animals for food. They adapted to new environments and created tools, clothing made from animal hides, cave paintings, and so on.

Humans are a species that is found all over the world, including the Arctic, Antarctica and the Amazon rainforest. They are a highly intelligent and innovative species that has contrived contemporary forms of governments, religions, technologies, medicines, education, industries and cultures.

They have also become very efficient at controlling their environment and managing their resources, thereby improving the quality of life for all people. The global population of human beings is now about 7.7 billion, a number that is rising rapidly.

Our Anatomy

We have no backbones like other mammals. Instead, we have vertebrae, which support our bodies and allow for movement. Our bodies are shaped like a pear, with the head and neck at the top of the body and the feet at the bottom.

Our brains are very complex and powerful, allowing for a high level of intelligence and the ability to communicate through a language that is very unique among all animals. It is compositional, meaning it allows speakers to combine and recombine words in their subject, verb and object roles. It is also referential, meaning it allows speakers to exchange information about people and objects with other humans.