C ARBON D IOXIDE - O XYGEN C YCLE

∞  Plants and animals are linked for survival through the carbon dioxide- oxygen cycle.

P HOTOSYNTHESIS  To undergo photosynthesis, plants need:  sunlight  water  carbon dioxide

P HOTOSYNTHESIS  Plants make food and oxygen in the process of photosynthesis.  Plants release the oxygen into the air.

C ARBON DIOXIDE  Carbon dioxide is found in the air.  It gets there from:  volcanoes erupting  burning fossil fuels  animals

A NIMALS  Plants make food through a process called photosynthesis  When animals consume the plants, they are consuming energy from the plants.  Animals convert the plant’s energy into the energy they need to grow and thrive.

C ARBON DIOXIDE - OXYGEN CYCLE Oxygen released during photosynthesis Carbon dioxide released during respiration

D IAGRAM THE C ARBON D IOXIDE C YCLE PhotosynthesisRespiration Add the materials that cycle: food, water, oxygen, and carbon dioxide.