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External forces in the formation of relief
EduBook Organización
- 6880 visitas
3.1. External forces Relief is not only the result of movements inside the Earth. External forces, such as the effect of water or wind, can also change the shape of the planet's surface. The action…
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Self-evaluation 7 - Rivers and seas
EduBook Organización
- 4620 visitas
Which concepts do the following statements refer to: Rise and fall of sea levels caused by the Moon's magnetic influence on the waters of oceans and seas. Permanent body of water deposited in a…
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Self-evaluation 8 - Weather and climate
EduBook Organización
- 3564 visitas
Which of the following statements about precipitation are true or false?: A rain gauge measures the amount of water that has fallen. A hygrometer is an instrument used for measuring average…
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Self-evaluation 8 - Rivers and seas
EduBook Organización
- 3356 visitas
Re-write the sentences about the ocean dynamic and correct the errors: Waves move forward as they rise and fall. The stage in which the level of the sea rises is known as low tide. The water of ocean…
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Analyse. Learn which part of the plant is sensitive to light
EduBook Organización
- 3250 visitas
Plants respond to light stimuli. In this experiment, we will find out which part of the plant responds to these stimuli. Equipment 3 cardboard boxes that are open on just one side, oat seeds, 3…
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Observe. Pollution of the environment
EduBook Organización
- 2720 visitas
Look at the drawing representing the different polluting agents and do the activities: Where is the cleanest water? And the cleanest air? Where is the water and the air most polluted? Explain how humans…
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Sponges, cnidarians and echinoderms
EduBook Organización
- 2565 visitas
Sponges Sponges are the simplest type of animal that exists. They live in water and are attached to rocks on the seabed. Sponges are often irregular in shape. Their bodies have lots of small holes that…
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Final self-evaluation 11.01 - The Animal Kingdom (II). Vertebrates
EduBook Organización
- 2357 visitas
Complete the text with the missing words: gills – swim – gills – gill slits – bone – oxygen – depths – closes Fish breathe through . Water enters the mouth and passes through the , which…
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Find out more
EduBook Organización
- 2354 visitas
The kidneys play an important role in the daily workings of our body. It is important to look after our kidneys in order to maintain a healthy urinary system. The kidneys remove waste products and…
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