To find out how many times more bird species there are than frog species, we divide the number of species of birds by the number of species of frogs.
Given:
- Birds: \( 3.4 \times 10^2 = 340 \)
- Frogs: \( 2.2 \times 10^1 = 22 \)
Now, we perform the division:
\[ \frac{340}{22} \approx 15.4545 \]
This means there are approximately 15.5 times more bird species than frog species.
The correct answer is therefore C. 15.5 times more bird species.