In Oceans, kids  will investigate this largest biome and see how environmental threats affect the earth's oceans. Changing climates threaten the plants and animals in the ocean's ecosystems as much as in the terrestrial biomes. Kids will learn about coral reefs, the rainforests of the ocean, and see the connection between increasing levels of carbon dioxide in the atmosphere and the bleaching of the reefs, which in turn affects every plant and animal in the ecosystem. Comparing the size of an island of floating plastic and other trash in the middle of the Pacific Ocean to the state of Texas - and how that floating island impacts ocean life - young readers will understand why consuming less plastic is important.