1. NEEDS OF LIVING THINGS

2. 5 NEEDS OF LIVING THINGS ENERGY GAS EXCHANGE LIVING SPACE WATER
HOMEOSTASIS
ENERGY

3. 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:
Plants
Other animals

4. WATER Living things are made up of water (65- 75%) Need water to: Grow
Transport materials
Chemical reactions

5. 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.

6. LIVING SPACE Place or location where an organism meets its needs
Has food, water, appropriate climate

7. HOMEOSTASIS
Keeping stable (balanced) internal conditions within the organism
Examples:
pH level (acid/base)
Glucose level (sugar)
Oxygen level
Temperature
Humans- sweat
Reptiles- use sun and shade

8. WATER
LIVING SPACE
GAS EXCHANGE
HOMEOSTASIS
ENERGY