Tag: threatened species

Occurrence of endemic species in South America and Australia is due to continental drift. Continental drift is the gradual movement of the continents across the earth's surface. Therefore, the correct answer is option B.

• Habitat destruction occurs when natural habitats are no longer able to support the species present, resulting in the displacement or destruction of its biodiversity.
• The growth of the human population has impacted the planet and affected biodiversity. The need for food, space and raw materials has resulted in the destruction of habitats and pollution.
  
• Introduction of invasive species causes harm to wildlife in many ways. When a new and aggressive species is introduced into an ecosystem, it may not have any natural predators or controls. Invasive species can also alter the abundance or diversity of species that are important habitat for native wildlife.

The variety of plants which are found in a particular region at a time is known as flora. This flora includes all the type of plant life and can be organised into different categories as native plants, agricultural, horticultural, floral and weeds. The flora of a particular region at a time is documented and then published. This helps to maintain a record of the type of plants in the region which existed at a particular time. 

The distribution boundaries of flora (plants)and fauna(animals) sorting into major bio-geographic regions.

Fauna is a term which refers to all of the animal life found within a specified region, time period, or both. The plants of the earth produce the oxygen that is breathed by the fauna and in turn, the fauna exhales the carbon dioxide that the flora needs to live. The existence of one species depends upon the existence of the other.

The living components of an ecosystem are known as biotic resources. These include human beings, flora and fauna, fisheries and livestock. Flora means the plants and fauna means the animals of the particular area. The components of the ecosystem interacts with each other and are interdependent on each other for their need of survival. The human activities like deforestation and pollution are a major threat to the biotic resources.

Flora is the plant life existing in a particular area. Fauna is the animal life which is present in the particular area. The type of flora and fauna found in a particular region determines the biodiversity in a particular region. The biodiversity in a particular geographical location depends on abiotic factors like soil, water, air, wind etc.

• Flora is the plant life of a particular region, habitat or time. Fauna is the animal life occurring in a particular region, habitat or time.
  
• These are a typical collection of plants or animals found in a specific time or place. An example of flora is North American flora, which contains Cannabaceae endlicher family of plants.
  
• An example of fauna is Sonoran Desert fauna. They form an important renewable natural resource.
  
• They are renewable resources as both plants and animals can reproduce and thus are replenished in an ecosystem.