- Cold temperatures usually have a negative impact on organisms
- Temperature is a property of an environment
- So, cold temperatures are a property of an environment that have a negative impact on organisms

- Cold temperatures are a property of an environment that have a negative impact on organisms
- If the properties of an environment have a negative impact on organisms then that environment will contain few organisms
- So, cold environments contain few organisms

- Ice is cold in temperature
- A glacier is made of ice
- Therefore, a glacier is cold in temperature

- A body of water is a kind of environment
- A glacier is a kind of body of water
- Hence, a glacier is a kind of environment

- Cold environments contain few organisms
- A glacier is cold in temperature
- A glacier is a kind of environment
- Hence, a glacier contains few organisms

Therefore, a glacier contains few organisms
Q: Which body of water has the fewest plants and animals living in it?
Context:
- A body of water is a kind of environment 
- If the properties of an environment have a negative impact on organisms then that environment will contain few organisms 
- Ice is cold in temperature 
- A glacier is a kind of body of water 
- A glacier is made of ice 
- Cold temperatures usually have a negative impact on organisms 
- Temperature is a property of an environment