The Energy Cycle of the Biosphere The energy that sustains all living systems is solar energy, fixed in photosynthesis and held briefly in the biosphere before it is reradiated into space heat. ... Marine plant cells accumulated for hundreds of millions of years, gradually building an atmosphere that screened out the most destructive of the sun's rays and opened the land to exploitation by living systems. ... The actual amount of solar energy diverted into living systems is small in relation to the earth's total energy budget. ... The total energy fixed is partitioned immediatly ...

• Word Count: 711
• Approx Pages: 3
• Grade Level: Undergraduate

Also using the weight of gas produced together with the balanced equation, the weight of potassium chlorate in the mixture may be determined. ... Connect the test tube to the system with the rubber stopper and clamp the test tube to the system with the rubber stopper and clamp the test tube securely to a ring stand. ... Hold the beaker so that its water level is the same as the water level inside the flask and then clamp the system. ...

• Word Count: 731
• Approx Pages: 3
• Grade Level: High School