Argentina exports large quantity of meat. Why?

We know, the famous grassland of the world 'pampas' is located in Argentina This grassland is the grazing land for the thousands of livestock. So, animal husbandry is very popular here. The reared animals are used for milk, meat, wool, etc. So, as Argentina is famous for animal husbandry, it is exporting large quantity of meat.

Why has animals rearing developed on large scales in Canada and in US?

We know, must parts of Canada and US lies in central lowland of America where plenty of grasslands are found. These grasslands are favorable for the rearing of both herbivores and omnivores animals. Animal husbandry is most suitable occupation here. So, animal rearing has developed on large scale in Canada and in US.

Explain the eco-system of hilly region and terai region with suitable examples.

Hilly region:
The hilly region lies between the mountain and terai region. This region is expanded ranging from elevation of 610 m to 4877 m from the sea level. This region has occupied about 42% of total land area of the country. There is physical and biological diversity both found in this region. The animal living, vegetation growing and so on are different with the difference fond in the land-structure, climate, soil and so on.

Terai region:
The terai region is the southern most part of the...

In the context of Nepal, biogas energy is the best of source alternative energy.

We all know, Nepal is an agricultural country. Natural wastes, sewage, etc. can be used to generate biofuel. The most practiced profession animal husbandry is also the source of different materials like decayed grasses, dung, etc which again can be used to get biofuel. On the other hand, a lot of dense forests are found in Nepal from where a high amount of biofuel can be taken. So, in the context of Nepal, biogas energy is the best source of alternative...

Write the differences between:a.    Biological and physical aspect of environment.b.    Social and economic aspect of health, population and environment.

a.    Biological and physical aspect of environment.

Describe the economic activities carried by the people of north America?

There are diverse economic activities carried by the people of north America. The western mountains are covered by dense coniferous forest. So, paper industries, forest products, lumbering and also mining is done here. Many, mineral based industries are running. Agriculture, floriculture, horticulture and animal husbandry is practiced widely here. Fishing and tourism are also the major economic activities of north America.

Define mutation. Explain few significances of mutation. 

The sudden, drastic, continuous and heritable change occured in an organism due to permanent change in gene is called mutation.

Some of the major significances of mutation are as follows:-

1. It helps in evolution because it incresess genetic variations and potential for individuals.

2. It helps the organisms to adjust itself against the environmental stresses.

3. The variations induced by mutation helps in natural selection.

4. It also helps in the evolution process of living beings

5. It...