Carbon cycle Crossword

A layer of gas above the Earth's surface
The region of the Earth where life exists and thrives, extending about 6 km above the oceans and about 10 km below it; the biosphere operates as a closed system that contains only a finite amount of matter available for life
The breaking down of plants and animals into simpler substances
The removal of waste products from an organism
A sequence showing how each animal in an ecosystem gets its food and the flow of energy and other nutrients from organism to organism
The remains of organic material (plants and animals) that over millions of years is compressed to form a source of energy, e.g. coal, gas, oil
A sugar found in plants, which is produced during photosynthesis and used as an energy source during cellular respiration
An ecosystem found in saltwater, e.g. an ocean, estuary, mangrove or salt marsh
The exchange of carbon into and out of the ocean, mainly by absorbing/releasing carbon dioxide into the atmosphere
The process plants use to turn light energy, water and carbon dioxide into glucose; oxygen is also produced as part of this process
The set of chemical reactions that takes place inside the cells to produce energy, e.g. for growth or movement