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Before you start - Plant nutrition
EduBook Organización
- 8697 visitas
All living things need to carry out their vital functions. To do this, they need food and energy. Unlike animals, plants make their own food. They need very simple substances like water and mineral…
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The Earth, a Living Planet
EduBook Organización
- 8392 visitas
The existence of water and a protective atmosphere were key elements for the appearance of life on Earth. The first cells appeared 3.5 billion years ago. From these early forms of life, different groups…
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Introduction - Plant nutrition
EduBook Organización
- 8266 visitas
All living things need to carry out their vital functions. To do this, they need food and energy. Unlike animals, plants make their own food. They need very simple substances like water and mineral…
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The parts of a plant
EduBook Organización
- 8207 visitas
All plants have roots, a stem and leaves. Some plants have flowers and fruit. Roots The roots hold the plant in the ground. They absorb water and mineral salts from the soil. Plants use these to make…
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Society and economy in the Roman Empire
EduBook Organización
- 6824 visitas
4.1. Urban society During the expansion of the Roman Empire, hundreds of cities were built. They all had a similar structure, with a central square (forum) and walls around the city. There were many…
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Heat and temperature
EduBook Organización
- 6581 visitas
Heat or thermal energy is the energy that a body transfers to a colder body at a certain temperature. Thermal energy is involved in many processes in our daily life, like cooking food, making a hot…
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Investigate - Plant nutrition
EduBook Organización
- 6578 visitas
All living things need to carry out their vital functions. To do this, they need food and energy. Unlike animals, plants make their own food. They need very simple substances like water and mineral…
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Remember - Plant nutrition
EduBook Organización
- 6345 visitas
All living things need to carry out their vital functions. To do this, they need food and energy. Unlike animals, plants make their own food. They need very simple substances like water and mineral…
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The Earth's surface: shaping human activity
EduBook Organización
- 1 lo usan
- 6064 visitas
In order to study human and economic geography it is important to understand the physical world that surrounds us. The geographical features of the continents and the oceans that surround them,…
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