There are various uses of Solar Energy. Farmers in Traditional Farming Communities used to solarise fields by living them empty after a deep ploughing during summers. It killed insects and pests. Human skin synthesizes vitamin-D when exposed to sunlight for short durations. Mothers used to make their babies sleep in the sun after oiling their bodies during winters in order to keep them healthy and strong.
There are more than 10,000 species of reptiles. This day helps us understand vast types of their species and their habitats. This day also provides us knowledge about benefits that we get from the world of reptiles.
As per an assessment, about 600 million people inhabited urban areas of the world in the year 1950. But now urban areas have been recorded to be inhabited by about half of the total population.
The conservation of environment implies the sustainable use as well as management of natural resources including wildlife, water, air, and soils of the earth.
Our natural resources are known to have some specific qualities of their own. These qualities are known as natural qualities. It is due to specific natural qualities that different natural resources have been useful to us and to the whole biosphere. But now, the condition has changed considerably.
What is the importance of DNA copying in reproduction?
The process of recovering or reusing usable materials from discarded waste is called recycling. For example, about 15 per cent of Sulphuric acid is recycled in chemical manufacturing. In the early days, all the sulphur needed for the production of sulphuric acid was taken out of mines directly. But now, with the prevailing tendencies of recycling, sulphuric acid manufacturing industries are using sulphur from smelters, refineries, etc.
Growth and movements in plants occur due to internal and external factors. Plant hormones are internal factors while light, touch, gravity and other stimuli are external factors that affect plant growth and movements.
Living beings in environment like animals and plants constitute more than half of the environment in the biosphere. All of these need to be conserved.
In human beings reproduction takes place through the activities of male and female reproductive organs. To understand this, it is essential to study the structure of male and female reproductive systems separately.
practices of modernization have disturbed the quality of environment.
Sometimes back Ranchi was known as the city of ponds. Every area by then had a pond and people of…
