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Introduction - The Atmosphere
EduBook Organización
- 2358 visitas
The Earth is surrounded by a mixture of gases we call the atmosphere. The air we breathe is part of the atmosphere. The atmosphere is composed of a series of layers. The most important layer is the…
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Most energy comes from the Sun
EduBook Organización
- 2333 visitas
Most of the energy on Earth originally came as light and heat from the Sun. Plants need water and solar energy in order to grow and survive. People and animals get food from plants, either directly or…
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End-of-unit evaluation - The Atmosphere
EduBook Organización
- 2278 visitas
The Earth is surrounded by a mixture of gases we call the atmosphere. The air we breathe is part of the atmosphere. The atmosphere is composed of a series of layers. The most important layer is the…
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True / False. Tectonic plates.
EduBook Organización
- 2223 visitas
Are these sentences true or false? The geosphere is completely solid and the rocks in the geosphere cannot change shape or move. The tectonic plates are around 100 km thick. They are made up of sections…
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End-of-unit activities - The Atmosphere
EduBook Organización
- 2135 visitas
The Earth is surrounded by a mixture of gases we call the atmosphere. The air we breathe is part of the atmosphere. The atmosphere is composed of a series of layers. The most important layer is the…
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The extinction of the dinosaurs
EduBook Organización
- 1874 visitas
In 1980, American scientists proposed that the cause of the extinction of the dinosaurs, which occurred about 65 million years ago, was the result of a meteorite hitting Earth. According to this…
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Final self-evaluation 02 - Climate and vegetation in Spain
EduBook Organización
- 1610 visitas
Complete the sentences with the correct words: altitude latitude decreases direct hotter temperature less moderates At the Equator, the Sun's rays hit the Earth at a angle. This is why it is near…
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Energy consumption
EduBook Organización
- 1554 visitas
7.1. Sustainable energy consumption Three quarters of all the energy produced is consumed by only 15 % of the Earth's population. Therefore, it is vital: To share out energy resources among all the…
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Geological Time (Part 1) - Geological Time (Part 1)
EduBook Organización
- 1057 visitas
Life on Earth originated about 2 billion years ago, but the earliest good fossils come from the Cambrian period, which began about 570 million years ago. The Cambrian Period The climate at the beginning…
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The Diversity of Life
EduBook Organización
- 15929 visitas
There are more than one and a half million recorded species on Earth, and there are probably several million more to be discovered. Some places have extraordinary diversity. For example, tropical…
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