Days have gone when students felt it very hard for them to have a friendly talk with their teachers. There were miles of hesitations between a students and teachers.
In the classroom set up many students were so shy and hesitant that they even did not lift up their hands to answer a question even when they knew it properly.
The environment of our earth has a number of life zones that support birth and development of all types of organisms.
All the life zones of the earth are collectively called as Biosphere.
The biosphere vertically extends into the atmosphere up to about 10 km and downwards into the oceans up to a depth of about6.9 km.
A Pesticide is a chemical substance of natural or synthetic origin. It is applied in different forms to kill pests. Pests are living organisms that tend to harm humans, their crops and animals or have a tendency to disturb general household and living conditions. Some organisms can also be applied to kill pests. These organisms are called as biopesticides. On the other hand, pesticides that are synthesized in factories are called as synthetic pesticides.
The information received by a receptor at the end of a dendrite sets of a chemical reaction that creates an electric impulse.
Abrupt changes in environment often do not give time to an organism to get ready and to face the challenges. As such the organism can survive only when it has sufficient abilities to tolerate these changes.
Modern development has caused a number of environmental problems at local, regional, national and international levels. Global Climate Change, depletion of ozone layer, increasing inequality, reduction in the means of livelihood for poor, scarcity of food, increasing number of disasters, extinction of species, falling underground water table etc. are some of the major environmental problems created by modern unsustainable development. These problems are challenging the existence of human race on this planet.
The term animal has its origin from the Latin word animalis which means one who has breath. This word is usually applied for the non-human members of the Kingdom Animalia in animal taxonomy. However, the closer relatives of humans like mammals (having mammary glands) have been included in this term.
New Technologies are developed for improving and increasing industrial production. Similarly, new projects are formulated for providing energy to those…
The Pollution of atmosphere leads to severe consequences on local, regional, national and international levels.
Sun is the only source of energy in the biosphere. Every living being can get its share of energy through food only and the energy is directly or indirectly obtained from green plants only.
Biodiversity sources and also other sources supply raw materials to many important industries.
They have aesthetic value and an appeal for ecotourism, which supports the growth of the national economy. They are also potential sources of pharmaceuticals, other chemicals, agricultural materials, etc.
Pharmaceutical products of biodiversity origin offer important medicines to our healthcare systems and prepare a background for many social services. Besides these, biodiversity offers various ecosystem services as each of the numerous species of animals and plants depends on other animals or plants for survival, breeding, and development.
Jordanov was a famous Italian philosopher, astronomer, mathematician and poet of 16th century. He was born in Shola, Italy in 1548.
