needs of living things. energy gas exchange water living space homeostasis 5 needs of living things
TRANSCRIPT
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NEEDS OF LIVING THINGS
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ENERGYG
AS E
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WATER
LIV
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5 NEEDS OF LIVING THINGS
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ENERGY/FOOD
Living Organisms need energy to perform all life functions
A lion needs energy to chase a zebra A deep sea fish needs energy to create light A human needs energy to play soccer
Main source of energy on Earth: Sun
Plants get energy from the sun to make food.
Animals (including humans!) get energy from the food they eat:PlantsOther animals
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WATER
Living things are made up of water (65-75%)
Need water to:
Grow
Transport materials
Chemical reactions
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GAS EXCHANGE
Gases are used in chemical reactions, release of waste, respiration.
Gases pass through membranes, gills, lungs, cells, etc.
Example: Plants take in carbon dioxide and release oxygen.
Important gases that are exchanged are oxygen, carbon dioxide, nitrogen, and methane.
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LIVING SPACE
Place or location where an organism meets its needs
Has food, water, appropriate climate
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HOMEOSTASIS
Keeping stable (balanced) internal conditions within the organism
Examples:pH level (acid/base)Glucose level (sugar)Oxygen levelTemperature
Humans- sweatReptiles- use sun and shade
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ENERGY
GAS EXC
HAN
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WATE
RLI
VIN
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PAC
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HO
MEO
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