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View Resource Ozone Depletion

Discussion of holes in the stratospheric ozone layer usually revolves around investigations of the thickness of the layer near the South Pole. This online activity allows users to study the thickness of the ozone layer over any location on Earth to see how it has changed over time. This is done by plotting historical data from the Total Ozone Mapping Spectrometer (TOMS) Program, which has been in...

View Resource Stratospheric Ozone

High levels of ultraviolet light can be harmful to many biological systems, as this higher energy radiation has a mutagenic effect on plant and animal cells. This activity studies the relationship between the amount of ultraviolet (UV) radiation that gets to Earth's surface and the amount of stratospheric ozone overhead. Users plot remote sensing data from the NASA Total Ozone Mapping...

View Resource The Atmosphere

This exercise is intended to reinforce the importance of Earth's atmosphere to living organisms. Topics include our bodies' interactions with the atmosphere; its composition and structure; and natural changes in the atmosphere (weather). Students will perform an activity in which they are asked to observe and record weather conditions for four days, answer questions about their observations, and...

View Resource How Humans Change the Atmosphere

This exercise, from the Environmental Science Activities for the 21st Century Project, is designed to introduce students to the idea that human activities can alter the chemistry or gaseous composition of the atmosphere, resulting in a variety of impacts on human health and the environment. Discussion topics include indoor pollution and local (point- or non-point source) pollution. Students will...

View Resource Trees and Carbon

The transport and transformation of substances in the environment are known collectively as biogeochemical cycles. These global cycles involve the circulation of elements and nutrients that sustain both the biological and physical aspects of the environment. As an example, this discussion centers around the carbon cycle and how carbon is sequestered in trees. Students will perform an activity...

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