The document discusses the requirements for sustaining life, including both abiotic and biotic factors. Abiotic factors are non-living elements like air, soil, temperature, light, and water that are necessary to support living organisms. Biotic factors are the living organisms themselves, including protists, bacteria, fungi, plants and animals. The document also examines characteristics of biotic organisms like movement, respiration, sensitivity, growth, reproduction and excretion. It considers what different organisms need to stay alive, such as energy, gases, water, soil and favorable temperatures.

1. Life
Requirements to sustain life

2. The Biosphere and other domains
Abiotic factors
• Non-living physical and chemical
elements
• E.g. :
• Air
• Soil
• Temperature
• Light
• Water
• Minerals
Biotic factors
• Living or once-living organisms
• E.g.:
• Protists
• Bacteria
• Fungi
• Plants
• Animals
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3. Characteristics of biotic
organisms
• Movement
• Respiration
• Sensitivity
• Growth
• Reproduction
• Excretion
• Nutrition
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4. Is this a living organism?
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5. Is this a living organism?
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6. Is this a living organism?
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7. Is this a living organism?
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8. Requirements for
Sustaining Life
• Energy
• Gases
• Water
• Soil
• Favourable temperatures
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9. What does this organism need to stay alive?
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10. What does this organism need to stay alive?
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11. What does this organism need to stay alive?
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12. What does this organism need to stay alive?
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