Biology
Grade-9
Easy
Question
Which of the following is not a freshwater ecosystem?
- Lake
- Pond
- River
- Ocean
Hint:
The ecosystem that is rich in salt content.
The correct answer is: Ocean
- Aquatic ecosystem is classified into fresh water and marine ecosystem.
- The marine ecosystem comprises of ocean and estuaries.
- These ecosystems are rich in salt concentrations.
- They have a higher density compared to fresh water systems.
- They have a freezing point of minus 2 degree Celsius.
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