Causes of extinction, Biology

Assignment Help:

CAUSES OF EXTINCTION -

1.       HUNTING -

  • Man started hunting wild animlas for food and safety trade and fun. It may be subsistence hunting, commercial hunting and sport hunting.
  • Now large scale killing has started for skin, fur, leather feathers, horn, ivory & meat etc.
  • Dodo (Raphus) of Moritius and chetah have recently disappeared due to excessive hunting.
  • Elephants & Rhinoceros are class to extinction due to hunting for ivory and horns.
  • Whales (blue whale) are about to extinct due to hunting for oil & whale bone.
  • Small musk deer is hunted for musk (used in perfumes).

2.       FOREST FIRES -

It is held that forest fires resulting from human activity or mistake have caused the elimination of many sps. of wild life.

3.       DISTRUCTION OF HABITATES -

Destruction of natural habitats causes the most serious threat to wild life.

Habitats are destroyed by many human activities due to development work, deforestation, pollution, cleanliness (vultures are about to extinct).

4.       PHYSICAL ALTERATION OF ENVIRONMENT -

Any physical change in the routes of the migratory birds or fishes adversely affects them.


Related Discussions:- Causes of extinction

Show the ph range of natural honey, Q. Show the pH range of natural honey? ...

Q. Show the pH range of natural honey? The pH of natural honey ranges from 3.4 to 6.1. Acidity of honey is primarily due to presence of acids such as gluconic acid, pyruvic a

Phylum coelenterata, #questioen..what is the example of outline og phylum c...

#questioen..what is the example of outline og phylum coelenterata

Explain the mechanism of drying, Explain the Mechanism of Drying? Dryin...

Explain the Mechanism of Drying? Drying as a mechanism, you will realize, involves the removal of free moisture from the surface and also moisture from the interior of the mate

Explain the factors affecting gi of foods, Explain the Factors Affecting GI...

Explain the Factors Affecting GI of Foods? A variety of factors affect GI of foods. The factors which affect the rate of glucose absorption from starchy foods and therefore the

Define the term- ultrafiltration, Define the term- Ultrafiltration Ultr...

Define the term- Ultrafiltration Ultrafiltration occurs when the flow of a substance across a cell membrane is increased by a hydrostatic pressure. This process was initially b

Types of ovarian cycles in mammals, Types of Ovarian Cycles in Mammals ...

Types of Ovarian Cycles in Mammals Mammals exhibit two types of ovarian cycles; Estrous Cycle, exhibited by non-primates such as rats, cats, dogs, pigs, and Menstr

Forebrain - olfactory lobes, Forebrain 1 .       OLFACTORY LOBES - ...

Forebrain 1 .       OLFACTORY LOBES - 1 pair, very small, solid, club shaped, separated from each other. Fully covered by cerebral hemispheres on dorsal side, clear on

Explain the tubal ligation, Explain the Tubal Ligation   This process i...

Explain the Tubal Ligation   This process is the most commonly utilized method of female sterilization. Tubal ligations are generally done in an outpatient surgical center. Thr

Name the element needed to insure the integrity of membranes, In mammalian ...

In mammalian body, this element plays numerous important roles. Try to identify this element with the fewest number of clues. This element is needed to insure the integrity and per

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