Question

What led to the population growth by increasing survival rates ans the average human lifespan?

Decrease in food availability
Reduced birth rates
Lack of technological advancements
Improvements in sanitation and medical care

Answer 1

The population growth by increasing survival rates and the average human lifespan can primarily be attributed to **improvements in sanitation and medical care**.

Here's a brief explanation of how each option relates to population growth:

1. **Decrease in food availability**: This would likely lead to higher mortality rates rather than population growth, as insufficient food can result in malnutrition and starvation.

2. **Reduced birth rates**: While this could influence population dynamics, reduced birth rates generally lead to slower population growth or even decline, not an increase in survival rates or lifespan.

3. **Lack of technological advancements**: A lack of technological advancements would hinder improvements in medical care, sanitation, and food production, all of which are critical for increasing survival rates and lifespan.

4. **Improvements in sanitation and medical care**: This option is the most relevant. Advances in sanitation (such as clean drinking water, waste disposal, and hygiene practices) and medical care (including vaccinations, antibiotics, and medical technology) have greatly reduced mortality rates from infectious diseases, improved maternal and child health, and increased overall life expectancy.

In summary, the accurate factor that led to increased survival rates and the average human lifespan is the significant improvements in sanitation and medical care.