The abyssal zone of oceans is characterized by:

Options

A. No sunlight but contains consumers and decomposers
B. No sunlight but contains producers
C. No sunlight but contains living beings
D. Sunlight as well as producers.

Answer

### Step-by-Step Solution:

1. **Understanding the Abyssal Zone**: The abyssal zone is a part of the ocean that exists at depths ranging from about 3,000 to 6,000 meters. This zone is known for its extreme conditions.

2. **Characteristics of the Abyssal Zone**:
- **No Sunlight**: The abyssal zone is completely dark because sunlight cannot penetrate to these depths. This is a defining characteristic of the zone.
- **Temperature**: The temperature in the abyssal zone is very cold, typically ranging from 2 to 3 degrees Celsius.
- **High Pressure**: The pressure in the abyssal zone is extremely high, approximately 6000 times greater than atmospheric pressure at sea level.

3. **Presence of Organisms**: Despite the harsh conditions, the abyssal zone does contain living organisms. These include:
- **Consumers**: Organisms that feed on other organisms.
- **Decomposers**: Organisms that break down dead organic material.

4. **Evaluating the Options**:
- **Option A**: "No sunlight but contains consumers and decomposers" - This is correct as there is no sunlight, but there are indeed consumers and decomposers present.
- **Option B**: "No sunlight but contains producers" - This is incorrect because producers (like plants) require sunlight for photosynthesis, which is absent in the abyssal zone.
- **Option C**: "No sunlight but contains living beings" - This is vague and does not specify the types of living beings; hence it is less accurate.
- **Option D**: "Sunlight as well as producers" - This is incorrect since there is no sunlight in the abyssal zone.

5. **Conclusion**: The most accurate characterization of the abyssal zone is that it has no sunlight but contains consumers and decomposers.

### Final Answer:
The abyssal zone of oceans is characterized by **no sunlight but contains consumers and decomposers**.

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