Because the dark box is blending in with the shadows, however the white box is bright and easier to see
The correct answer is D. Bird flu.
Polio and smallpox are very rare today as they were eradicated hundreds of years ago and TB has been around for maybe thousands of years. Bird f!u was discovered in 1957.
Answer:
They are sympatric species.
Explanation:
Sympatric speciation is the presence of two species with same surviving ancestral species in the same geographic area. Sympatric species have numerous characteristics that are common in the same geographical area. They have same evolutionary path therefore they are anatomically similar too.
