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BBC Nature - Carboniferous period videos, news and facts
V&V Books Vicens Vives Organización
- 1216 visitas
The Carboniferous is famed for having the highest atmospheric oxygen levels the Earth has ever experienced and for the evolution of the first reptiles.
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Respiratory System: Facts, Function and Diseases
Angela G Docente
- 2 lo usan
- 819 visitas
The human respiratory system consists of the lungs and other organs. Its main function is to take in oxygen and carbon dioxide.
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Cycling of matter
V&V Books Vicens Vives Organización
- 1 lo usan
- 813 visitas
Learn about how matter cycles between the living and nonliving components of an ecosystem - the biogeochemical cycles of water, carbon, oxygen.
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How Does A Fire Extinguisher Work?
V&V Books Vicens Vives Organización
- 494 visitas
All the fire extinguishers work on a basic principle of removing any of the three basic elements of combustion: oxygen, heat or fuel.
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Complete. Photosynthesis
EduBook Organización
- 4464 visitas
Complete the formulas of photosynthesis and respiration: chemical energy - oxygen - glucose - carbon dioxide - solar energy Photosynthesis water + + –––––> + oxygen Respiration glucose +…
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Breathing (II)
EduBook Organización
- 3414 visitas
Exchange of gases in our lungs Our body exchanges oxygen for carbon dioxide inside the pulmonary alveoli. Each alveolus is connected to a network of very small blood vessels, called capillaries. Oxygen…
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Unit 2: Animal nutrition
EduBook Organización
- 3000 visitas
Absorption (n): taking in a substance or energy from the surrounding area. aerobic respiration (n): respiration which takes place in the presence of oxygen. anaerobic respiration (n): respiration which…
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Classify. Metals and non-metals
EduBook Organización
- 2723 visitas
Look at the diagram and answer the questions: Classify the elements in the table into metals and non-metals. Oxygen Nitrogen Chlorine Bromine Zinc Sulphur Sodium Iron Copper Gold Say what the physical…
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Did you know? Pure substances: elements and compounds
EduBook Organización
- 2590 visitas
Elements can be found in nature in different proportions. For example, on Earth, the most common elements are iron, oxygen and silicon (which is present in the silicon dioxide of the sand on beaches).…
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Photosynthesis and respiration
EduBook Organización
- 2438 visitas
4.1. Photosynthesis Photosynthesis is the process by which solar energy, absorbed by chlorophyll, is used to convert carbon dioxide and water into glucose and oxygen. water + carbon dioxide + solar…
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