What causes this lake, near the Spanish city of Torrevieja, to turn pink?
A Pollution
B Algae
C Shrimp
The algae present here, which thrive in the lake’s salty water, are rich in carotenes, giving the lake a rosy hue. Shrimp and other crustaceans in the lake eat the algae and become pink as well, and then pass the coloration on to the flamingos that feed on them.
The correct answer is Algae.