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Living Things Classification

Biological classification works a bit like the library does. Inside the library, books are divided up into certain areas: mistery, science fiction, adventure, drama, comedy... Within each of those sections, there will be more divisions like fiction, non-fiction…

Biological classification works the same way. At the top there are the kingdoms. The kingdoms divide up life into big groups like plants and animals. Under the kingdoms are more divisions until, finally, you get to the species, which is like getting to the book you are searching in the library. 

There are seven levels of classification: Kingdom, Phylum, Class, Order, Family, Genus, and Species. The two main kingdoms we think about are plants and animals.

Here is an example of how humans are classified:

Kingdom: Animalia 
Phylum: Chordata 
Class: Mammalia 
Order: Primates 
Family: Hominidae 
Genus: Homo 
Species: Homo sapiens


Animals and plants are made of cells. Cells form the basic "building blocks" for living things. 

Cells are very small. They are the basic building blocks of all animals and plants. This photograph shows cells seen through a microscope:

World Climates. Climate of Spain

Weather and climate are different.  Weather is a short change of the air in an area measured by temperature, precipitation, humidity, wind, and other factors. Climate is usually defined as the weather conditions in an area over a long period of time.

Rivers and Mountains of Spain

A trip through the main rivers and also the tallest mountains in Spain: 


How the brain works

The brain is the most fascinating part of the human body. Not much to look at, it resembles a spongy mass of tissue, feels like toffe and weighs roughly four taps of butter. A brain is actually made up of mostly water and about ten per cent fats. Well, our brain only makes up approximately the two per cent of the entire body weight. It uses a massive twenty per cent of the body's energy.

The brain's basic building blocks are known as neurons and we have around one hundred billion of these, each with between one thousand to ten thousand conexions to other neurons, creating neuropathways or roads within the brain. There are literally trillions of neuroconexions within the brain. Similar to a city's electrical power grid, information is passed along these roads through a series of chemical messages and electrical impulses.

As all of this activity takes place, our brain generates between ten to twenty five watts of power, enough to par a lightbulb. Over the course of one day, your brain generates more electrical impulses from faring neurons than all of the telephones in the world. So really, your brain isn't just a spongy mass of tissue, it's your most complex organ, a power station that connects you every thought, movement or feeling. And it's faring right now.


Our body needs food to provide it with energy, vitamins, and minerals. However, in order use food, we must first break it down into substances that the various organs and cells in our body can use. This is the job of our digestive system.


The human respiratory system contains the organs that allow us to get the oxygen we need and to remove the waste carbon dioxide we don't need. It contains these parts:

Circulatory System

Made up of the heart, blood and blood vessels, the circulatory system is your body’s delivery system. Blood moving from the heart, delivers oxygen and nutrients to every part of the body. On the return trip, the blood picks up waste products so that your body can get rid of them.

Excretory System

As your body performs the many functions that it needs in order to keep itself alive, it produces wastes. These wastes are chemicals that are toxic and that if left alone would seriously hurt or even kill you.


An adjective is a word that describes a Noun.

A large dog.
Clear water.
The big house.
Clean floor.

The Water Cycle

The earth has a limited amount of water.  That water keeps going around and around and around and around and ... in what we call the "Water Cycle".