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Transport between cells
EduBook Organización
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2.1. The circulatory system The circulatory system is made up of blood vessels (arteries, veins and capillaries). The heart pumps the blood through the blood vessels to reach all the cells in the body.…
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Initial evaluation 03 - Animals
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Match the groups of animals with their characteristics: Fish They have hair or fur. They have feathers. They use gills to breathe. They have an internal skeleton. They reproduce with eggs. They regulate…
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True / False. Cellular respiration
EduBook Organización
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Are these sentences true or false? Our body exchanges oxygen for carbon dioxide inside the pulmonary arteries. The pulmonary alveoli are connected to a network of very small blood vessels called…
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Introduction - Human reproduction
EduBook Organización
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Reproduction is an essential function in human beings. It enables humans to produce individuals similar to themselves. In this unit you will learn how the reproduction that started your life occurred.…
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Summaries - Heat and temperature
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1. Energy transfer: heat Heat or thermal energy is the energy that is transferred from hot bodies to cold bodies. All the particles that make up bodies have internal energy; the particles in a hot body…
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Unit 6: The Hydrosphere
EduBook Organización
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Absorption (n): the process of taking in water or another substance. aquifer (n): a natural deposit of fresh groundwater found within porous rock. colourless (adj): having no colour. continental waters…
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Learn. The different types of respiration - Animal nutrition
EduBook Organización
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Diffusion In unicellular organisms, like the amoeba, respiratory gases are exchanged across the whole surface of the body. These gases then cross the cell membranes by diffusion. Tracheal respiration…
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Upthrust and buoyancy in liquids
EduBook Organización
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7.1. Archimedes' principle If we try to submerge a ball in a container of water, the water exerts a vertical upward force known as upthrust. According to Archimedes' principle: A body totally or…
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End-of-unit activities - Human reproduction
EduBook Organización
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Reproduction is an essential function in human beings. It enables humans to produce individuals similar to themselves. In this unit you will learn how the reproduction that started your life occurred.…
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End-of-unit evaluation - Human reproduction
EduBook Organización
- 2161 visitas
Reproduction is an essential function in human beings. It enables humans to produce individuals similar to themselves. In this unit you will learn how the reproduction that started your life occurred.…
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