To determine which statement about the world population is correct based on the given data from 2000 and 2005, let's analyze each option step-by-step:
### Option A: The median age of the population is decreasing.
- Year 2000: The median age is 26.
- Year 2005: The median age is 27.
- The median age has increased from 26 to 27, indicating that the population is getting older, not younger.
Therefore, Option A is incorrect.
### Option B: The number of people added to the population yearly is increasing.
- Year 2000: The number of people added was 78,299,807.
- Year 2005: The number of people added was 78,602,746.
- The number of people added to the population has increased from 78,299,807 in 2000 to 78,602,746 in 2005, which shows a slight increase in the yearly addition.
Therefore, Option B is correct.
### Option C: The population size is getting smaller.
- Year 2000: The population was 6,126,622,121.
- Year 2005: The population was 6,519,635,850.
- The population has increased from 6,126,622,121 in 2000 to 6,519,635,850 in 2005.
Therefore, Option C is incorrect.
### Option D: The population is growing younger.
- Year 2000: The median age is 26.
- Year 2005: The median age is 27.
- The median age has increased, showing that the population is actually growing older, not younger.
Therefore, Option D is incorrect.
Based on the data provided, the correct answer is:
B. The number of people added to the population yearly is increasing.
