Recursos educativos oxygen página 13

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Complete. The bloodstream
EduBook Organización
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Complete this text with the correct words: In pulmonary circulation, blood passes from the right ventricle to the lungs through the artery. In the lungs, the blood expels carbon dioxide and collects .…
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Final self-evaluation 11.01 - The Animal Kingdom (II). Vertebrates
EduBook Organización
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Complete the text with the missing words: gills – swim – gills – gill slits – bone – oxygen – depths – closes Fish breathe through . Water enters the mouth and passes through the , which…
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Keeping our lungs healthy
EduBook Organización
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We need to inhale clean air for our respiratory system to work properly. If there is less oxygen in the air, we have difficulties in breathing. This is why badly ventilated spaces are bad for our lungs.…
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The origin of coal
EduBook Organización
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Much of the coal on Earth was formed 300 million years ago, during the Carboniferous period. The coal was formed where the climate was hot and humid, and there were extensive areas covered in lush…
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Unit 8: The Earth, a Living Planet
EduBook Organización
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Asexual reproduction (n): the process of reproduction of a single organism by itself. autotroph (n): an organism that produces its own food for nutrition. bioelement (n): any of the chemical elements…
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Complete. Plants
EduBook Organización
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Complete the text with the missing words. autotrophic - sap – chlorophyll – 500 – sunlight – carbohydrates – roots – vessels water – xylem – phloem – sunlight – held – oxygen -…
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The importance of plants
EduBook Organización
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Photosynthesis is an essential process for plants because it provides them with food. It is not only plants that benefit from photosynthesis. All living things benefit for two reasons: Animals depend on…
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Unit 10: The Plant Kingdom
EduBook Organización
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Aerobic organism (n): an organism which requires oxygen to live. angiosperm (n): a plant which produces seeds that are protected by a fruit. bract (n): a hard, specialised leaf that is associated with…
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Top 22 Benefits of Trees
V&V Books Vicens Vives Organización
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Here are 22 of the best reasons to plant and care for trees or defend a tree?s standing: Trees combat climate change Excess carbon dioxide (CO2) caused by many factors is a building up in our atmosphere…
- De 15 a 30 minutos
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Chemical elements in the Universe and the Earth
EduBook Organización
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Chemical elements are found in different amounts in the Universe and on Earth. Hydrogen makes up 90% of all the matter in the Universe. The rest of the elements make up the remaining 10%. On Earth, the…
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