Questions and Answers
Groundwater
Groundwater is a crucial resource for human survival and for the environment. Groundwater means...
Water Treatment
Reverse osmosis is used as a seawater desalination method. The way reverse osmosis works is...
Climate change
Definition of drought, types and consequences. World Desertification and Drought Day.
Water Treatment
Osmosis is a biological process of vital importance for living beings which involves...
Desalination
We tell you what is the meaning of desalination and how it is done.
Urban water cycle
Evaporation is a physical process in the water cycle that involves...
Urban water cycle
Water is the most abundant substance in the planet and the only one that can in found in the atmosphere in liquid, solid and gaseous state. Water can be characterised as...
Urban water cycle
Even though the amount of water in the hydrosphere is constant, it is unevenly distributed in the planet. The hydrosphere can be defined as...
Drinking Water
Drinking water must be clean, tasteless, odourless, colourless and free of any contaminants, with some dissolved substances that are beneficial for us. Potable water means...
Climate change
One of the phenomena that most contributes to climate change is the greenhouse effect, which entails...
Energy
Description and types of hydroelectric power plants.
Biodiversity ,
World ,
Cambodia, Congo, Democratic Republic of, Venezuela
An answer to which is the largest waterfall in the world, according to different criteria.
Climate change ,
World
Climate change will generate an average temperature increase of the planet surface and a sea level rise during the 21st century. Climate change is defined as...
Waste water treatment ,
India
The most polluted river in the world flows through India and Bangladesh and it suffers from…
Biodiversity ,
Peru
Until the source of the Amazon was found, several locations had been proposed. In 1996, the Amazon Source expedition located the source of the Amazon in…
Biodiversity ,
Mexico
The longest river in Mexico is very important for the economy of the state of Chihuahua, as well as internationally, and its length is…
Biodiversity ,
Brazil, Peru
Longer than the Nile, the Amazon river is the longest river in the world, and its length is…
Biodiversity ,
Egypt, Ethiopia, Kenya
The Nile is the second longest river in the world, after the Amazon and before the Yangtze and the Missouri rivers, and its length is….
Biodiversity ,
Asia Pacific ,
China
After the Amazon and the Nile, the longest river in Asia and the third longest river in the world, with a length of…
Biodiversity ,
Middle East & Africa
The deepest river in the world is also the second longest river in Africa. At some points water depth can reach…
Biodiversity ,
Americas ,
Argentina, Uruguay
The widest river in the world drains the second largest basin in South America and has a maximum width of…
Biodiversity ,
Americas ,
Canada
The longest river in Canada is the second longest river in North America and the 12th longest one in the world and its length is…
Biodiversity ,
Americas ,
United States of America
The longest river in North America flows entirely through the United States and its length is...
Biodiversity ,
Europe ,
Russia
The longest river in Europe has had considerable influence on the development of many cities in Russia and its length is…
Biodiversity ,
Middle East & Africa ,
Egypt
The length of the longest river in the African continent and the second longest in the world is…
Biodiversity ,
Americas
The longest river in the world is also the one with the highest discharge; it flows through several countries in South America and its length is…