- Living thing is a kind of organism
- As a population of organisms increases , the resources used by those organisms will decrease
- Therefore, as a population of living things increases, the resources used by those living things will decrease

- As a population of living things increases, the resources used by those living things will decrease
- Living things require water for survival
- Water is a kind of natural resource
- So, as a population of living things increases, the water used by those living things will decrease

- As a population of living things increases, the water used by those living things will decrease
- If the amount of something decreases then that something might be depleted
- Hence, as a population of a living thing increases the water used by those living things might be depleted

- A desert environment is low in availability of water / availability of food
- If a resource is low in availability then it is more likely to be depleted
- So, water is more likely to be depleted in a desert environment

- As a population of a living thing increases the water used by those living things might be depleted
- Water is more likely to be depleted in a desert environment
- Therefore, increased populations are likely to cause water to be depleted in a desert environment

So, increased populations are likely to cause water to be depleted in a desert environment
Question: Increased populations can lead to the depletion of locally available resources. Compared to other communities, which of these locally available resources is most likely to be depleted in desert communities?
Context: - Living thing is a kind of organism 
- Living things require water for survival 
- Water is a kind of natural resource 
- A desert environment is low in availability of water / availability of food 
- As a population of organisms increases , the resources used by those organisms will decrease 
- If the amount of something decreases then that something might be depleted 
- If a resource is low in availability then it is more likely to be depleted