The grasses, also known as Poaceae, are a family of plants that includes a wide variety of species, most of which are herbaceous. They are characterized by their jointed stems, narrow leaves, and unique flowers organized in spikelets.
We live surrounded by sounds and sources of sound. The brain and the nervous system are responsible for interpreting sounds. Moreover, we ourselves produce sounds both naturally and artificially. Let's learn about the sources that give rise to sounds.
The human reproductive system is an organ system by which humans reproduce by giving birth to living offspring. In human reproduction, two types of sex cells, or gametes, are involved. The male gamete or sperm and the female gamete, the ovum. When sperm fertilizes an egg, this fertilized egg is called a zygote. After a long process it becomes an embryo and later a fetus.
The foods are grouped according to different criteria. One of them is according to the functions that they develop in our body.
Energy is the force capable of generating an action or work. This is a Simple Guide to Understanding Energy: How many devices are there in your life, which consume energy?
The eyes, nose, tongue, ear and skin are the organs that collect information about our environment and help protect the body because they "warn" what is happening around.
Studying the planet as a whole is complicated. To do this, it is divided into terrestrial spheres. The spheres are four: Hydrosphere, Geosphere, Biosphere and Atmosphere.
The solar system is a planetary system formed by the Sun and the celestial bodies that orbit around it, including our planet Earth. There are many other solar systems in the Universe.
Even with the most advanced technology, we can only see a small part of the Universe. It is called the observable Universe, and it is the part of the Cosmos whose light has had time to reach us.