Advertisements
Advertisements
Question
There is mass mortality of fishes in a pond. What may be the reasons?
Advertisements
Solution
The possible reasons can be:
- thermal pollution.
- addition of harmful compounds such as mercury to water.
- obstruction of fish gills by any water pollutant.
APPEARS IN
RELATED QUESTIONS
Write any two water bodies in your area. ____, ____.
Fill water in an ice tray and keep it in the freezer.
After few hours, take it out. What happened to the water?
Water is converted into _______ when it is heated
Water droplets Combines to forms _____.
Water cycle increases the availability of _______.
Observe the given graph carefully and answer the questions.
- What percentage of water is seen in fish?
- Name the food item that has maximum amount of water in its content.
- Name the food item that has minimum amount of water in its content.
- Human body consists of about ______ percentage of water.
- Specify the food item that can be consumed by a person when he/she is suffering from dehydration.
State for the following whether it is due to evaporation or condensation:
Fog appearing on a cold winter morning.
One of the following processes is not a step involved in the water-cycle operating in nature
The process of the water cycle that is related to the plants is called ______.
Match the following:
| Water cycle | Application of fertilizers |
| Nitrogen cycle | Sunlight |
| Carbon cycle | Deforestation |
| Abiotic factor | Volcanic activities |
