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Unit 1 presentation
This document discusses living things and the environments they inhabit. It defines characteristics of living things like movement, sensitivity, nutrition, breathing, growth, excretion and reproduction. It explains that living things need water, oxygen, light, carbon dioxide, mineral salts and a suitable climate. There are two main environments - aquatic, with abundant water but little light below a depth, and terrestrial, with lack of water and highly variable conditions.
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Unit 1 presentation
- 1. The Earth, aliving planetThe Earth, a living planet UnitUnit
- 2. Index on Unit1 What are living things? Matter in living things A good place to live Conditions necessary for survival Two types of environment: aquatic and terrestrial
- 3. 1.1 What areliving things? Movement Sensitivity Nutrition Breathing Growth Excretion Reproduction
- 4. 1.1 What areliving things? Movement: Fins
- 5. 1.1 What areliving things? Movement: wings Hang glider
- 6. 1.1 What areliving things? Movement: Legs. In this picture we can see a couple of wolves attacking a bison
- 7. 1.1 What areliving things? What is the fastest animal in the world?
- 8. 1.1 What areliving things? Movement: Ivy
- 9. 1.1 What areliving things? Movement: Ivy Sunflower
- 10. 1.1 What areliving things? Sensitivity: Sunflower
- 11. 1.1 What areliving things? Sensitivity: Beetle. Escarabajo sanjuanero
- 12. 1.1 What areliving things? Nutrition: Heterotrophic nutrition. Organisms which obtain their food from organic substances (for instance, human beings undergo this kind of nutrition). Animals obtain their food from other living things. Autotrophic nutrition. Organisms which obtain their “food” from inorganic substances (for instance, plants perform this kind of nutrition).
- 13. 1.1 What areliving things? Breathing Growth Excretion Reproduction Pellet, from an owl
- 14. 1.2 Matter inliving things Inorganic substances - Water and mineral salts Organic substances Protein Lipids Carbohydrates
- 15. 1.3 A goodplace to live In order to survive, living things need: Liquid water Oxygen Light and carbon dioxide Mineral salts A suitable climate
- 16. 1.3 A goodplace to live
- 17. 1.3 A goodplace to live
- 18. 1.3 A goodplace to live
- 19. 1.3 A goodplace to live The Solar system
- 20. 1.4 Conditions necessaryfor survival The conditions that occur in a particular place are called environmental factors. They include: • Biotic factors. Organisms are dependent on the presence of other living things within a habitat. • Abiotic factors. These are chemical and physical factors, such as light, temperature, humidity and water salinity.
- 21. 1.4 Conditions necessaryfor survival What factors do you recognize in this little ecosystem?
- 22. 1.5 Two typesof environment The aquatic environment - seas, oceans, rivers, ponds and lakes. - three quarters of the Earth is covered by water
- 23. 1.5 Two typesof environment Some characteristics - Abundance of water - Very little changes - Filter for light - Small amounts of air Remember; about 150 meters below the surface there is total darkness, therefore, plant life is limited.
- 24. 1.5 Two typesof environment The terrestrial environment Home to organisms that don’t stay permanently in the water - Lack of water - Highly variable conditions. Fluctuations. A desert (don’t mistake for dessert)