The Oxygen Cycle Sydney Jarrett and Samantha Ost
Photosynthesis • The process by which light energy is converted to chemical energy
Weathering • Physical and chemical process in which solid rock exposed at earths surface is changed to separate solid particles and dissolved materials
Respiration & Decay • Mechanisms in which animal life and bacteria consume oxygen and release carbon dioxide
The oxygen left inside of people after they have been buried in the ground gets absorbed by the soil. The chemical decomposition of materials under the influence of light Burial Photolysis
Plants • The oxygen cycle starts off in plants. • Plants use photosynthesis to produce carbohydrates and oxygen • Plants “breathe” in carbon dioxide and “breathe” out oxygen
Water • When the water in a steam enters a pond, microorganisms in the pond begin to break down organic matter, consuming oxygen in the process.
Organism • Last in the cycle are the organisms • Their role in the cycle begins with carbon dioxide in the atmosphere. • Animals breathe that oxygen and both plants and animals use the sugars for energy.