A hidden ecosystem of giant sea spiders, octopuses, and other stunning sea creatures shows how life can flourish even when sealed off from the surface by a thick layer of ice. A large sponge ...

Enjoy five days' worth of comprehensive daily lesson plans, engaging activity worksheets, graphic organizers and more!

The map shows the distribution of the global ecosystems or biomes.

The biotic parts of the ecosystem, which include bacteria, flora and fauna, have a complex relationship with the abiotic components - changing one will lead to a change in the other.