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.
Human beings needed to live together to have a family and to rear and develop children. They lived together for social security and social strength. Thus, human settlements were formed.
Neighbourhood is a geographically localized community within an area, may it be a rural area, a town or a city, or sub-urban.
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.
ASSESSMENT: NCERT QUESTIONS WITH ANSWERS
The reflex action is an involuntary action which goes on automatically. We don’t have any control on this type of action. Walking, on the other hand is a voluntary action which can be controlled and modified by us.
Ant colonies are Eusocial which means living in a cooperative group in which usually one female and several males are reproductively active and the non-breeding individuals care for the young and protect the group. These are very much like those found in other social animals though the various groups of these developed sociality independently through convergent evolution.
Rains in Nepal have always been responsible for floods in Bihar. Most of the rivers flowing through Bihar have their origins in Nepal. Since last three days Nepal is experiencing continuous rainfall. This is why villages in Bihar are being seriously flooded. What can be done?
When a new plant is developed or caused to develop through stem, root or leaf the method is called as vegetative reproduction. In other words, vegetative reproduction means- reproduction through anyone of the vegetative parts of the plant.
As environment is common heritage and property of all nations of the world, the science of environment should also combine relevant matter so as to promote the value and necessities of local, national and international co-operation in the prevention and solution of environmental problems across the globe.
Coarse grains are broadly discussed these days. Now the world has come to know about their importance. Coarse grains have been contained in the Indian dishes since long. Now that the harmful effects of soft grains are known, the world has come to advocate the coarse grains.
Play is a powerful tool that can be applied for social negotiations.
The process by which a new species is introduced into a habitat is called as Bio invasion. A number of…
It is due to frequent oil spills that sea otters, many sea birds, whales and many other species of the marine environment have become endangered. The oil spill damages fisheries and Mari culture, and causes serious economic losses to the local public and the governments.
