Population explosion has occurred in the last :

Options

A. 500 years
B. 300 years
C. 100 years
D. 50 years

Answer

To solve the question regarding the timeframe of the population explosion, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Population Growth**:
- Begin by recognizing that population growth refers to the increase in the number of individuals in a population over time.

2. **Historical Population Data**:
- Look at historical data for world population. For instance, in 1900, the world population was approximately 2 billion.

3. **Recent Population Statistics**:
- By the year 2000, the world population had surged to about 6 billion. This indicates a significant increase over the century.

4. **Analyzing the Rate of Increase**:
- The increase from 2 billion to 6 billion represents a growth of 4 billion people in just 100 years. However, the most dramatic changes in population growth rates occurred in the latter half of the 20th century.

5. **Focusing on the Last 50 Years**:
- If we analyze the population growth specifically in the last 50 years (from 1950 to 2000), we see that the growth rate accelerated due to various factors such as decreased mortality rates, increased birth rates, and improved healthcare.

6. **Conclusion**:
- Based on the data and analysis, the population explosion is most accurately described as having occurred in the last 50 years.

### Final Answer:
The population explosion has occurred in the last **50 years**.

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