The surface of planet Earth is made up of several layers with different functions, compositions a...
Our planet is made up of different layers of different composition, structure and characteristics...
The mouth gives entrance to the digestive system of mammals, including humans. In it there are di...
Our planet Earth is too big to be studied in all its structure and composition, so in order to st...
In addition to controlling their internal environment, human beings (and animals) need perceive a...
The earth's crust is outermost layer of our planet and is divided into continental crust and ocea...
In order for living beings (including humans) to develop on our planet, they need a resistant str...
Our planet Earth is divided into several layers. In a general division, these are from the inside...
Fungi belong to fungi kingdom, and, unlike plants, they are heterotrophs so they do not produce t...
what are bones? To understand the bone functions, we must first know what some of its characteris...
The urinary system It is one of the most important systems in the excretion mechanism of higher a...
Life exists and expands on planet Earth thanks to a fundamental function of living beings known a...