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This online tutorial will provide you with some guidelines on how to interpret both topographic and geologic maps.

This online resource investigates the features and topology of the ocean floor, the effects of wave erosion and the landforms created by coastal depositions.

Defining and comparing tension, weight, friction and normal forces using free body diagrams.

This 32 minute long YouTube video investigates the water contamination problems in Tanzania, with specific focus on Dar Es Salaam. 

This 11 minute long YouTube video describes the various causes and types of water pollutants.

This YouTube video elaborates on what weather is and what causes changes in the weather.

This short online tutorial highlights the difference between weather and climate.

This short online resource elaborates on the difference between climate and weather and why understanding the climate is important.

This YouTube video investigates what water pollution is and some examples and effects of water pollution.