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Unit 4: Rivers and seas
EduBook Organización
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Desalination plant (n): a factory that converts salt water into fresh water. erosion (n): the process of weathering and transportation of materials by a river. flow (n): the amount of water a river…
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Living things
EduBook Organización
- 1 lo usan
- 5213 visitas
There are a great variety of living things on the Earth. Some are microscopic and very simple, like bacteria, and others are very big and complex, like elephants. Even though they are different, all…
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Natural and man-made landscapes
EduBook Organización
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There are places on Earth that have not been changed by humans. These are called natural landscapes. Landscapes that have been changed by humans are called man-made landscapes. There are three different…
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Check. Natural hazards
EduBook Organización
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Review what you have studied and answer the questions: What is a hazard? What are the four great natural hazards on Earth? What preventive measures should there be in areas near an active volcano? What…
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Introduction - Air and the atmosphere
EduBook Organización
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- 4792 visitas
Humans, plants and animals need air to breathe and live. Air is a mixture of gases. A layer of air covers the Earth and protects life on our planet. This layer of air is called the atmosphere. When air…
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Complete - Remember
EduBook Organización
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Complete: Air is a mixture of gases. The two main gases in air are and . You cannot see air because it has no . Air does not have any taste or . The is a layer of air that surrounds the Earth. Sailing…
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Webquest: Greenschool
Tiching explorer Organización
- 1 lo usan
- 8318 visitas
This webquest is designed to make us aware of the dangers that planet Earth is facing and, at the same time, of the tiny daily gestures we can have in order to help save it. We do an online research. We…
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Remember - Air and the atmosphere
EduBook Organización
- 4743 visitas
Humans, plants and animals need air to breathe and live. Air is a mixture of gases. A layer of air covers the Earth and protects life on our planet. This layer of air is called the atmosphere. When air…
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Atmospheric pressure and wind
EduBook Organización
- 4636 visitas
4.1. Atmospheric pressure Atmospheric pressure is the weight or force that the air exerts on the surface of the Earth. Atmospheric pressure depends on: Altitude: the higher the altitude, the lower the…
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Summaries - Rivers and seas
EduBook Organización
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1. Water in nature Some 97.21% of the planet’s water is salt water and is found in: Oceans: large bodies of water that separate continents; there are five oceans on Earth. Seas: extensions of the…
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