Oceans and Life

This chapter explores the oceans as the largest water bodies on Earth and the incredible life they support. It covers how oceans influence climate, sustain diverse marine ecosystems, and provide resources that make life…

• The ocean covers most of Earth's surface and supports a huge variety of life.
• Sunlight cannot reach the deep ocean, so deep-sea life must survive without it.
• Phytoplankton are microscopic organisms that photosynthesise and form the base of most ocean food chains.

Full explanation, worked examples & memory tricks in the app