Trade and Commerce

Trade Trade is the transfer of ownership of goods and services from one person or entity to another. Trade is sometimes loosely called commerce or financial transaction or barter .A network that allows trade is called a market.  The original form of trade was barter, the direct exchange...

By: Unknown On 2:40 AM

Continue Reading

Ancient Geography of India

Ancient Geography of India The first text in Greek devoted entirely to India was written by Ctesias in the fourth century BC. Only fragments of it survive. Yet he was probably the most widely quoted author on India, although Aristotletreated him with contempt. However, soon after Aristotle drew upon Ctesias’ writings, as did Plato,Xenophon and Plutarch....

By: সাদমান On 11:24 AM

Continue Reading

Amazon

Amazon Definition In Greek mythology, the Amazons were a race of warlike women noted for their courage and pride who lived at the outer limits of the known world, sometimes specifically mentioned as the city of Themiskyra on the Black Sea. Their queen was Hippolyta and although Homer tells us they were ‘the equal of men’,...

By: সাদমান On 7:55 PM

Continue Reading

Observation : Advantages and Disadvantages

What is observation? Observation is way of gathering data by watching behavior, events, or noting physical characteristics in their natural setting. Observations can be overt (everyone knows they are being observed) or covert (no one knows they are being observed and the observer is concealed). The benefit of...

By: সাদমান On 9:39 PM

Continue Reading

Solar System

Solar System The Solar System comprises the Sun and its planetary system of eight planets, their moons, and other non-stellar objects. It formed 4.6 billion years ago from the gravitational collapse of a giant molecular cloud. The vast majority of the system's mass is in the Sun, with...

By: সাদমান On 7:45 PM

Continue Reading

Ecosystem : Meaning and Definition

Ecosystem         The term ecosystem was first used by A. G. Tansley in 1935 who defined ecosystem as 'a particular category of physical systems, consisting of organisms and inorganic components in a relatively stable equilibrium, open and of various sizes and kinds'.      ...

By: সাদমান On 12:08 PM

Continue Reading

Ecology : Meaning and Definitions

Ecology meaning Ecology in a very simple term. The word ‘ecology’ (‘oecology’ or ‘oekology’) derived from two greek words, ‘oikos’ meaning house or dwelling as habitat and ‘logos’ meaning the study of. Ecology definitions The term ‘ecology’ was first coined and used by the German biologist, Ernst Haeckel...

By: সাদমান On 9:07 PM

Continue Reading

Dulhazra Safari Park( Bangabandhu Sheikh Mujib Safari Park) - Bangladesh

Dulahazra Safari Park Figure : Map of Dulahazra Safari Park Location: Chakaria, Dulahazra Union,Cox’s Bazar Climate:   The climate is subtropical in nature. The average annual rainfall is 3599 mm, hottest month is October, coldest month is January, driest month is December, wettest month is July, average maximum temperature...

By: সাদমান On 11:44 PM

Continue Reading

Weathering ?

weathering what is Weathering ? Weathering is a static process. The process of disintegration and decomposition of rocks in situ is generally called weathering. weathering definition Weathering refers to the breakdown or disintegration and decomposition of rocks in situ through mechanical and chemical changes in the rocks  and...

By: সাদমান On 10:30 AM

Continue Reading

What is environment ?

Meaning Of Environment The word environment’ has been derived from the French word ‘environer’ meaning to encircle or to surround. The Dictionary meaning of the word ‘environment’ is a ‘surrounding’ ; external conditions influencing development or growth of people, animals or plants; living or working conditions etc. definition...

By: সাদমান On 12:46 PM

Continue Reading