What do the patches of green layer floating on the surface of stagnant water bodies like ponds and lakes consist of?

Answer

**Step-by-Step Solution:**

1. **Understanding Stagnant Water**: Begin by defining stagnant water. Stagnant water refers to water that is still and not flowing, commonly found in ponds and lakes.

2. **Identifying the Green Patches**: Observe the green patches that float on the surface of these stagnant water bodies. These patches are commonly seen in such environments.

3. **Recognizing the Organisms**: The green patches are primarily composed of algae. Algae are simple multicellular organisms that can thrive in aquatic environments.

4. **Characteristics of Algae**: Algae are eukaryotic organisms, meaning they have a defined nucleus. They contain chlorophyll, which allows them to perform photosynthesis.

5. **Growth Conditions**: Algae require specific conditions to grow rapidly. These include adequate sunlight, suitable temperature, and an aquatic habitat. When these conditions are met, algae can proliferate quickly.

6. **Conclusion**: Therefore, the patches of green layer floating on the surface of stagnant water bodies like ponds and lakes consist mainly of algae.

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