Analyse these ecosystems like the example:
Individual: a penguin, a seagull, a polar bear, a whale, a sea lion, …
Population: the population of penguins, the population of seagulls, the population of seals, …
Community: the penguins + the seagulls + the whale + the polar bears, …
Ecosystem: It´s an aquatic environmet. It includes all the animals we can see, the mountains, the water, the ice and a very low temperatura.
Biome: This polar ecosytem belongs to a polar biome