Questions and Answers on Reproduction Biology Class X
What is the importance of DNA copying in reproduction?
NCERT
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Demand and supply of Energy in India
Energy is essential for working and survival of all the organisms on this planet. In fact, it is the energy which enables organisms to perform their biological functions.
Value of Birds that Live in Our Surroundings
For one it is the indication of meeting the other, either boy or the girl. This belief prevails in many parts of India including Jharkhand. If by chance, you spot a single myna, it is sure that your day is going to be alone on the whole. It comes true most of the time.
Making Compost for Better Health of the Soil
The organic matter formed through degradation of decomposable biomass and which is rich in nutrients for the growth and development of plants is called as compost.
Coarse grains to promote health
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.
Energy for us
Anything from which we can derive energy is called as a source of energy. Since all the life processes need energy, energy is most important for our survival.
Our body derives energy from the food we eat. Thus, the food we eat is the source of energy for our body. But this is not the whole story. We need energy for our growth and economic development as well.
Tiger Population falls down to zero in Jharkhand
We have damaged ecosystems in the name of development. Wildlife too is facing danger. Our activities have impacted in such ways that animal population has fallen into a serious zone of danger.
Shelter – Definition, Need and Types
The dictionary meaning of a shelter is – something beneath, behind, or within which a person, animal or anything is protected from adverse conditions, and where it can reproduce is called as a shelter.
Energy from Oceans- Tidal Energy, Wave Energy and Oceanic Thermal Energy
Ocean is a vast natural resource of water. These have also been examined in the search for alternate sources of energy-generation. For example, gravitational pull, by sun and moon causes tides, in which sea level rises and falls, two times in 24 hours. When it rises, sea water may be diverted through suitable channels, to inshore reservoirs driving the turbines, during its entry.
Legal Regimes for Sustainable Development
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.
