Archive | Geography

Although it is impossible to describe al the world’s railway systems in detail, a brief review on a continental basis is of interest.

Inland waterways are best developed in two continents, Europe and North America.

They are the microscopic plants and animals.

It comprises of the entire water mass, which may be further divided into neritic province and oceanic province.

It leads to a very thorough mixing of the surface water; and hence determines salinity.

It is another factor which leads to diversity in the amount of salinity.

Despite the diversity of their components, all ecosystems function in the same way.

Radiant energy is received from the Sun in the form of electromagnetic radiation.

Climatic conditions: Extremely cold and dry

i. Histosols get their name from a Greek word for tissue. Their identification badge is a layer of organic remains (the histic layer).

i. Oxisols get their name from the oxic horizon, a diagnostic accumulation of iron and aluminum oxides.

i. The Ultisols get their name from the word ultimate.

i. Alfisols got their name from the chemical symbols al (aluminum) and fe (iron).

Climatic Conditions: Winters are long and severe, summers are cool and brief, very low mean annual temperature.

Climatic Conditions: Extremely hot with unreliable and scarce rainfall

Long dry warm season and short rainy season; water is the limiting factor.