Question 49
Coral reefs are formed by tiny animals called coral polyps. Their hard skeletons provide many different habitats where other species can live.
One of these species is a single-celled alga that makes a toxic substance called ciguatoxin. Herbivorous fish eat the alga. Carnivorous fish eat the herbivorous fish. Humans often eat the carnivorous fish.
Thousands of different species live on coral reefs. Use the information to suggest why so many species can live there.
One of these species is a single-celled alga that makes a toxic substance called ciguatoxin. Herbivorous fish eat the alga. Carnivorous fish eat the herbivorous fish. Humans often eat the carnivorous fish.
Thousands of different species live on coral reefs. Use the information to suggest why so many species can live there.
