Plankton are microscopic organisms that drift in the ocean. They are eaten by fish and other larger animals. However, plankton are outnumbered by their predators by a factor of 1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000 to 1. How can plankton survive?

Answer:

Plankton can reproduce very quickly. They can double their population in a matter of days. This means that they can easily replace the individuals that are eaten by predators.