Which of the following is a natural ecosystem?
Forest
The correct answer is Forest.
While artificial ecosystems like crop fields are essential for human survival (providing food), natural ecosystems provide crucial ecological services that benefit all life on Earth. These services include: Producing oxygen and absorbing carbon dioxide (e.g., forests). Filtering water and regulating water cycles (e.g., forests, wetlands). The health and preservation of natural ecosystems are vital for the overall balance of the planet's environment.
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- Which of the following are the necessary conditions for the growth of coral reefs ?
1. Photic conditions
2. Clean and sediment free water
3. Sea salinity of 6%
4. Tropical sea water with temperature of $20^\circ C$ to $21^\circ C$
Select the correct answer using the code given below : - NPP (Net Primary Productivity) is highest for
