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Answer. Plant nutrition
EduBook Organización
- 1881 visitas
Remember what you have studied in this section and answer the questions: What is photosynthesis? Why are chloroplasts green? How do algae and mosses get the water and carbon dioxide they need? How do…
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End-of-unit evaluation - Matter and materials
EduBook Organización
- 1868 visitas
Everything around us is made up of matter. Matter can be found in three states: solid, liquid and gas. The air we breathe is a gas, the water in rivers and seas is a liquid, and the rocks are in a solid…
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Match. Rock types
EduBook Organización
- 1872 visitas
Match the definition to the different rock types: Rocks which are made up of grains of sand or mud that are held together by other mineral substances: Rocks which form when magma cools quickly on the…
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Soil, texture and acidity
EduBook Organización
- 1821 visitas
Soil texture is determined by the size of its particles and thus how much water it can retain. Sand has the largest particles. Sandy soils retain almost no water, which is not good for plants. Clay has…
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Choose. Atmospheric phenomena
EduBook Organización
- 1627 visitas
Match each phenomenon with its description: Movement of air from one place to another because of differences in the pressure between the two places. Water droplets and ice crystals that fall from clouds…
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True/false. The atmosphere
EduBook Organización
- 1535 visitas
Are the following sentences true or false? The Earth has always had the same atmosphere. The most abundant components of the atmosphere are carbon dioxide and water vapour. Everywhere in the…
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Matter and Materials
Carles Escolà Teixidó Familiar
- 1 lo usan
- 1388 visitas
All objects around us are made of matter. Matter is anything that occupies space. We find matter in three different states: solid, like ice, liquid, like water, and gas, like water vapour. We can make…
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Final self-evaluation 4 - The Hydrosphere
EduBook Organización
- 1410 visitas
Complete the text with the missing words: Water is a very good of all types of solid, and gaseous substances. Living beings absorb many substances for life because they are dissolved in . At the same…
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Final self-evaluation 1.6 - Matter and Materials
EduBook Organización
- 1397 visitas
Complete the following sentences with the missing words: A group of atoms is called a . move around the nucleus of an atom. are made up of two or more different chemical elements. The formula for is…
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What is sedimentation?
EduBook Organización
- 1389 visitas
Sedimentation is the process of depositing materials. It can happen in different ways: Dissolved material in a river may be deposited if the water evaporates. A rock mineral called calcite is formed in…
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