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Discuss the role that Oxygen (O2) plays in the global biosphere. (2 sentences miin)
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- What were the consequences of an “oxygenated” Earth to life and to the atmosphere itself? (explain)1. Cellular respiration and photosynthesis both involve water. 2. Cellular respiration uses sugar, and photosynthesis produces sugar. 3. Cellular respiration and photosynthesis both use light to produce energy. 4. Cellular respiration requires light energy, and photosynthesis requires chemical energy.What is one way humans put carbon into the air? Group of answer choices a. Surfing the internet b. Photosynthesis c. Animal Respiration d. Writing Notes
- Explain why an increase in oxygen in the atmosphere to 50 percent would be dangerous to living things?Which is an example of diffusion of oxygen? a. Movement of oxygen from the lungs into the blood stream b. Flow of blood from the lungs through the blood vessels to the leg c. Wind blowing d. Ventilation e. Water currentsWhat is meant by the term cellular respiration? A. The process by which cells breath B. The process by which cells make their own food by assembling chemical bonds. C. The process by which cells break down the chemical bonds in food to get energy D. The process by which cells make oxygen for us to use in our bodies.
- How do Photosynthesis and respiration complement each other? (verbal presentation100 – 150 words)Use the kinetic model of gases to explain why light gases, such as H2 and He, are rare in the Earth's atmosphere but heavier gases, such as O2, CO2, and N2 are abundant."Life has shaped earth just by existing”. In 2-3 sentences, explain this statement briefly by citing an example.