What are the suggested reasons for population explosion?

Explanation

### Step-by-Step Solution:

1. **Understanding Population Explosion**:
- Population explosion refers to the rapid increase in the number of individuals in a population, particularly in human populations.

2. **Decrease in Mortality Rates**:
- One of the primary reasons for population explosion is the significant reduction in death rates. This means that fewer people are dying compared to the past.

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