- Drier means lower in amount of water
- A dry environment is low in availability of water
- So, as dryness increases in an environment , the available water in that environment will decrease

- As dryness increases in an environment , the available water in that environment will decrease
- Living things require water for survival
- Therefore, as dryness in an environment increases, the ability of living things to survive in that environment decreases due to a lack of available water

- As dryness in an environment increases, the ability of living things to survive in that environment decreases due to a lack of available water
- Storing water increases the water available to organisms in a dry environment
- So, as a living thing's ability to store water increases, that living thing's ability to survive in a dry environment increases

- As a living thing's ability to store water increases, that living thing's ability to survive in a dry environment increases
- If something increases something else then that something has a positive impact on that something else
- So, ability to store water has a positive impact on an living thing's survival in a dry environment

- Ability to store water has a positive impact on an living thing's survival in a dry environment
- An adaptation has a positive impact on a living thing 's survival
- Hence, ability to store water is a kind of adaptation to a dry environment

Therefore, ability to store water is a kind of adaptation to a dry environment
Question: If an environment becomes warmer and drier, the change that would most likely help a species adapt would be an increase in its
Context: - An adaptation has a positive impact on a living thing 's survival 
- Drier means lower in amount of water 
- Living things require water for survival 
- If something increases something else then that something has a positive impact on that something else 
- Storing water increases the water available to organisms in a dry environment 
- A dry environment is low in availability of water