
E-Learning Strategies
A specialized presentation on choosing the right instructional strategies for e-learning. It builds understanding of distance learning strategies, the importance of e-learning and its main advantages.
The atmosphere is the gaseous envelope that completely surrounds the Earth. Its lower part consists of several main gases that are colorless, tasteless and odorless.
The presentation describes the composition of the atmosphere, its layers, and the role it plays in protecting life on Earth, and it discusses the threats it faces from pollution.
Composition of the atmosphere
Layers of the atmosphere and their features
Importance of the atmosphere for life
Pollution and ways to protect the atmosphere
Science and geography teachers, middle and high school students, and anyone interested in environmental and earth sciences.
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