Exotic and Introduced Plants
Some propagules or seeds incidentally travel long distances and reach to other county. There they germinate and produce new plants.
Enviroment
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Natural Resources and Their Types
Natural resources constitute both living and non-living resources. Non-living resources are renewable and non-renewable.
Inequality at workplace: Gender, age, caste & economic aspects
Earlier women had to do most of the work in household. But, the trend is changing now. Both men and women have to do all the work now. The Inequality at the work place is vanishing now.
Questions and Answers on Environment
Ans. Specific enzymes are needed for degradation of substances. A single enzyme cannot degrade many substances. Different types of microorganisms…
Human Activities and Environment
Waste too is found in three states- solids, liquids and gases. Liquid wastes such as different types of chemicals, useless medicines, detergents, pesticides, oil, automobile wastes etc. spread on the soil surface and make it poisoned. Decomposition and burning of things on ground produce different gases that pollute the air.
Loss of Energy in the Food –Chain
About 1000J radiant energy comes to the earth from the sun. Out of this, only 10% of the total energy is used up by green plants in the process of Photosynthesis. Remaining 990J of energy escapes away into the atmosphere. 10J of energy is stored in the form of chemical energy in starch and sugars.
Flow of Energy in an Ecosystem
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.
Flow of Nutrients in Ecosystem
The flow of nutrients in ecosystem takes place in cyclic pathways through food chains, food webs and bio-geo-chemical cycles. Food…
Impact of Human Activities on Environment
Growth of human population, fast but unplanned industrialization and irresponsible behavior to environment are causing imbalances in the local, regional, national and global environment. These are causing not only local but global problems in the environment.
Relations among components of ecosystem and Food Chains
Green plants and trees that synthesize their own food are called as Autotrophs.Others who depend on them are called as Heterotrophs.
Animal Husbandry and Milch Cattle
We rear and take care of animals to take their support in food production. Their systematic and proper rearing and also the arrangement for their proper reproduction and management are called as Animal Husbandry.
Global perspective of environmental problems
Our environment today is facing a number of problems. All those problems are causing dangers to take shape against the existence of the whole biosphere of this planet. But who is behind all those problems? The answer is – M A N.
