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Investigate. Non-renewable sources of energy
EduBook Organización
- 2015 visitas
Remember what you have studied in this section and answer the questions: Find out what other products are obtained from coal and oil and say what they are used for. Find out how a nuclear power station…
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The transport of substances in plants
EduBook Organización
- 2020 visitas
2.1. Plant transport systems Plants have two transport systems, one for each type of sap that is transported: Xylem. This system transports raw sap (water and mineral salts) from the root up the stem to…
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The importance of plants in everyday life
EduBook Organización
- 1996 visitas
Part of our diet is made up of plant products. They are very important. They provide us with carbohydrates, vitamins, mineral salts and fibre, which are all essential for a healthy diet. When we eat…
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Analyse. Recycling oil
EduBook Organización
- 1976 visitas
Read the text and answer the questions: We use vegetable oil at home to fry food. We often have leftover oil that we no longer use. Sometimes we pour it down the sink, where it travels along the pipes…
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The discovery of the cell
EduBook Organización
- 1965 visitas
The discovery of the cell did not occur until after the invention of the microscope, in 1590. In 1665, the English scientist Robert Hooke published the first description of cells when he examined…
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Video: Texas Resident Wins Award for Challenging Oil Refineries
Esl video Organización
- 2797 visitas
This 3 minute report from Voice of America features the environmental struggle of Hilton Kelly against an oil processing plant in his hometown. This was releasing toxins which caused respiratory…
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Reproduction in flowering plants
EduBook Organización
- 1952 visitas
Some plant species reproduce asexually, but most plants reproduce sexually. A pollen grain fertilises the egg cell inside the ovule. The sexual organs of spermatophytes (flowering plants) are in the…
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Fungi - Fungi
EduBook Organización
- 1911 visitas
Fungi are an important group of living things. This group includes mould and mushrooms. Fungi are different from animals and plants. Like animals, fungi feed on organic matter from other organisms.…
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Pollination, fertilisation and the formation of seeds
EduBook Organización
- 1714 visitas
Pollination Sexual reproduction in plants occurs when a spermatozoid meets an ovule. For this to happen, the pollen grains need to travel from the stamens to the pistil. This process of transferring…
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Learn. Biomes - The natural environment. Ecosystems
EduBook Organización
- 1628 visitas
The name biome is given to zones of the Earth which have similar plant and animal populations. Each biome spreads over a large area, including different continents. On a given continent, there can be…
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