2 · en
Short, simple sentences with “stratosphere”, suitable for children and primary/elementary school, with common expressions and related words. You'll also find examples for middle and high school.
Chlorofluorocarbons were used in aerosols, air conditioners and various plastics. As they rise and reach the stratosphere (they take about 8 years) they are bombarded by ultraviolet rays that break their molecular bonds.
Without ozone in the stratosphere, life on earth would not exist, as it protects the planet's surface from ultraviolet rays and their deadly effects on living organisms. The radiation can break DNA itself, as well as cause cataracts, skin cancer, immune deficiency, crop failure and disruption of ecosystems.
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