Lakes - lentic ecosystems, Biology

Assignment Help:

Lakes - Lentic Ecosystems

Most lakes occur in regions which have recently been subjected to geological changes; say within the past 20,000 years. However, a few lakes, such as Lake Baikal in Russia and Lake Tanganyanitia in Africa are ancient and are estimated to have originated twenty million years ago. Lakes arise in several ways. Some, like the tectonic lakes, are formed in basins created by geological activities such as warping and faulting of the earth's crust. Most of the Himalayan lakes are tectonic in origin.

Some are formed in crater depressions of extinct volcanoes and are called crater lakes, for example lake Konsar nag in Kashmir. Others may be a result of glacial activity. For example most lakes of North America originated due to glacial erosions and deposition, whereby glacial abrasions of slopes in high mountain engraved basin which later became filled with melting snow and rain. Still others have been formed by deposition of silt, drift-wood and other debris in beds of slow moving streams. Lakes may also arise by landslides blocking off streams and valley.


Related Discussions:- Lakes - lentic ecosystems

Define primary level care - public nutrition, Define Primary Level Care - P...

Define Primary Level Care - Public Nutrition? This is the first level of contact of an individual, the family and the community with the national health system. It is possible

Define ergogenic and for training and competition, Define Ergogenic and for...

Define Ergogenic and for training and competition? There is always our desire to work with the body more .than its capability. This is more so in case of athletes. They wish to

How can germs can be transmitted, How can germs can be transmitted Germ...

How can germs can be transmitted Germs can be transmitted many ways, including: Touching dirty hands; Changing dirty or contaminated cloths; Through contaminated water and f

What are the part of the musculoskeletal system, Which are the organs that ...

Which are the organs that are part of the musculoskeletal system? The main organs and tissues that are part of the musculoskeletal system in humans are the cartilages, the bone

Uses of plural embryos, Uses of Plural Embryos Although the basic tha...

Uses of Plural Embryos Although the basic that trigger causes polyembryony are not fully understood, there has been no dearth of interest in exploiting supernumerary embryos.

Phylum protozoa, what is holozoic, holophytic, saprozoic nutrition

what is holozoic, holophytic, saprozoic nutrition

Infective endocarditis, Infective Endocarditis   It  is a term used to ...

Infective Endocarditis   It  is a term used to include subacute bacterial endocarditis as well as infection caused by viruses  and fungi.  The causative organisms responsibl

What is meant by gene expression, What is meant by Gene Expression? The...

What is meant by Gene Expression? The synthesis of protein under the influence of gene is called Gene Expression. All human cells are derived from a single cell, fertilized egg

Clinical evaluation of infants and young children, Clinical Evaluation of I...

Clinical Evaluation of Infants and Young Children Approaches to clinical practice advanced in recent year are mostly directed at older children and adolescents. There has not b

............., notochotr is absent in the group ...........

notochotr is absent in the group ...........

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd