Q. No.The highest concentration of polycarbonated biphenyls [PCBs] in a lake is expected in:
1.
Small fish
2.
Sediment
3.
Phytoplankton
4.
Zooplankton
The addition of fertilizers is frequently required in agricultural lands but not in wild mainly because:
| 1. | nitrogen-fixing bacteria and detrivores are less potent in agricultural lands. |
| 2. | the nutrients that enter the plants are not returned to the soil on lands where they are harvested. |
| 3. | the agricultural lands are selected for their oligotrophic soils. |
| 4. | cultivation of agricultural lands inhibits the decomposition of organic matter. |
What is most likely to occur due to continued global warming?
| 1. | Poleward movement of plant communities |
| 2. | A fall in the sea levels |
| 3. | Increased decomposition of organic matter in the polar region |
| 4. | Increase in tundra regions |
The environmental pollutants that will have the most negative effects would be:
1. human organic wastes
2. wastes from feedlots
3. an excess of natural nutrients
4. non-biodegradable chemicals
Kyoto protocol commits signatories to:
1. Plant more trees
2. Cut forests for agriculture
3. Increasing nitrogen oxides into the atmosphere
4. Increasing the amount of methane in the atmosphere
“Greenpeace” is a non-governmental environmental organization with headquarters in:
1. Geneva, Switzerland
2. Paris, France
3. Amsterdam, Netherlands
4. Nuuk, Greenland
Identify the incorrectly matched pair:
|
1. |
Ozone depletion |
DNA damage |
|
2. |
Greenhouse effect |
Increased atmospheric carbon dioxide |
|
3. |
Acid rain |
pH < 5 |
|
4. |
Eutrophication |
Decreased primary productivity |
The radiatively active gas with the maximum percent increase in the atmosphere since 1750 AD is:
| 1. | Carbon dioxide | 2. | Methane |
| 3. | Nitrous oxide | 4. | Chlorofluorocarbons |
Non-biodegradable pollutants are created by:
1. Nature
2. Excessive use of resources
3. Humans
4. Natural disasters
According to Central Pollution Control Board, the diameter of particles that are responsible for causing great harm to human health is:
1. 2.5 micrometer
2. 5.0 micrometer
3. 10.0 micrometer
4. 7.5 micrometer
© 2024 GoodEd Technologies Pvt. Ltd.