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प्रश्न
Write four adverse effects of radiations on human body.
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उत्तर
- Genetic changes occur.
- Vision is adversely affected.
- Tissues in the body are destroyed.
- Cancerous ulceration occurs due to higher radiation from X-rays.
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संबंधित प्रश्न
Explain the statement - ‘we have got this Earth planet on lease from our future generations and not as an ancestral property from our ancestors.’
Write a short note on disaster and its management.
Write six strategies implemented by you for conservation of environment.
How can biodiversity be conserved?
Attempts at various levels are performed for conserving environment. Which role would you like to perform. Give two actions each:
- Prevention
- Control
- Production
- Awareness
- Conservation
Find an odd one out.
Earthquake : Natural factor : : Industrialization : : _____________
Give scientific reason.
Pollution is a very broad concept.
Give scientific reason.
The role of human beings in environmental balance is important.
Which are types of pollution?
______ of our environment means to protect all things found in nature.
Even today there is a need for movements like 'Chipko' movement. Explain this with the help of an example that you have experienced.
What is the full form of UNEP?
Complete the following table taking into account the relation between the entries in three columns:
| Air pollution | Water pollution | Soil pollution | |
| Components | Gases: CO2, CO, Hydrocarbons, Sulphur, NOx, Hydrogen sulphides etc. Solid: dust, ash, carbon, lead, asbestos, etc. |
||
| Source | Industrial wastes, domestic wastes, sewage, chemicals discharged from industries, pesticides used in agriculture. |
||
| Effect | Soil erosion, retarded growth of plants/ crops, Nutritional deficiency etc. |
Why is there a need for conservation of the environment?
Complete the following conceptual picture:
Give two sources of air pollution.
Match the correct pair:
| Column 'A' | Column 'B' | ||
| (1) | Forest Conservation Act |
(a) | 1986 |
| (b) | 1980 | ||
| (c) | 1970 |
