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Website: Big Universe
Tiching explorer Organización
- 3621 visitas
"Big Universe" is a place where we can read online books and/or create a boook and publish it. There are different levels of difficulty depending on the books. We can request a 14-day trial…
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Correct. Fertilisation
EduBook Organización
- 2101 visitas
Replace the underlined words in the text with the correct ones: pollen embryo Fertilisation seed zygote seed-bud Pollination takes place when the spermatozoid goes down the fertilising tube and meets…
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Video: The Citric Acid Cycle
Tiching explorer Organización
- 3007 visitas
This presentation explains how the TCA cycle is the basis of aerobic metabolism. We study the breakdown of carbohydrates, lipids and proteins to get GTP (or ATP). We can watch animations and see details…
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Did you know?
EduBook Organización
- 2103 visitas
In a hermaphrodite animal, the same individual produces eggs and sperm. Cross-fertilisation usually takes place in these animals: two individuals mate and each one behaves like a male and a female at…
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Check. The society of the 21st century
EduBook Organización
- 2100 visitas
Remember what you have studied in this unit and answer the questions: What major transformations have taken place in social classes, jobs and cities in recent decades? How have women's roles changed…
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Investigate. The germination of pollen grains
EduBook Organización
- 2087 visitas
In this practical, you can see the germination process of pollen grains. Under normal conditions this takes place in the flower's stigma. Equipment A flower, a dropper, a microscope, a paintbrush, a…
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Video: Catalysis
Tiching explorer Organización
- 2851 visitas
This animation shows how reactions are driven by energy changes and how enzymes, as catalysts, increase the rates at which reactions take place. By hovering with our mouse over the reactions we can…
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Force and pressure
EduBook Organización
- 2061 visitas
6.1. The efficiency of force When a force is applied, the effect caused depends not only on the magnitude of the force, but also on the surface area to which it is applied. The relationship between…
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Self-assessment T01 06 - Our planet Earth
EduBook Organización
- 2048 visitas
Are these sentences true or false? The process of erosion takes places before the process of weathering. Sedimentation is the process of depositing materials. Transportation takes place after the…
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Match. Economy and landscapes
EduBook Organización
- 2056 visitas
What type of economic activity takes place in each landscape?: The population is nomadic and raises livestock. Some inhabitants overexploit the wood from the trees. People traditionally live from…
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