Sixth extinction will be ?

Options

A. Natural
B. Mass
C. Anthropogenic
D. All of there

Explanation

### Step-by-Step Solution:

1. **Understanding Extinctions**: The question refers to the "Sixth Extinction," which is a term used to describe a potential future mass extinction event. It is important to first understand what mass extinctions are and how they have occurred in the past.

2. **Reviewing Past Extinctions**: Historically, there have been five major mass extinctions:
- **First Extinction (Ordovician-Silurian)**: Occurred about 444 million years ago, caused by mass weathering and glaciation.
- **Second Extinction (Late Devonian)**: Characterized by a significant drop in ocean oxygen levels.
- **Third Extinction (Permian-Triassic)**: Resulted from excessive volcanic eruptions, leading to the loss of 96% of marine species and 75% of terrestrial species.
- **Fourth Extinction (Triassic-Jurassic)**: Triggered by a quadruple increase in atmospheric CO2, resulting in greenhouse gas effects.
- **Fifth Extinction (Cretaceous-Paleogene)**: Caused by an asteroid impact, leading to the extinction of approximately 76% of species, including dinosaurs.

3. **Identifying the Sixth Extinction**: The sixth extinction is not yet a historical event but is anticipated. The primary cause is believed to be human activities.

4. **Causative Agents of the Sixth Extinction**: The main factors contributing to the potential sixth extinction include:
- **Over-exploitation of resources**: Unsustainable hunting, fishing, and logging practices.
- **Pollution**: Contamination of air, water, and soil affecting ecosystems.
- **Climate Change**: Resulting from greenhouse gas emissions due to human activities, leading to global warming.

5. **Conclusion**: Based on the information gathered, the sixth extinction is expected to be anthropogenic, meaning it is caused by human actions. This distinguishes it from previous extinctions, which were primarily natural events.

6. **Final Answer**: The sixth extinction will be anthropogenic.